She does not, on principle, object to this procedure. She even kind of wanted it herself, because she's not a fucking idiot. However, consider:

If sex is equivalent to the intimacy of being entwined to someone on a psychic level, through his gate and personhood itself.

Then rape is equivalent to this.

Does he want to know what it's like on the other side of things? To be powerless and weak and at the mercy of his lazy fucking whims? To watch the destruction caused by how he didn't want to bother to go find a better human to be his instrument to act upon the world? To have her efforts to improve the world (and there's an echo of her grief and rage of Jeneora) casually torn apart by him because he didn't want to bother listening to the other side of things? Because he was certain he was right and righteous and correct in all things?

Here it is. This is what you, Nai, have done to her, Yvette. On a personal level. Hint: it's not nice.

She thinks that she might be able to kill him. Actually, she even sort of wants to. There's probably even a clever way she could hijack his gate from him and make it her own, if she were motivated enough.

He was incorrect. She is not a plant. There was no grand conspiracy from the networked plants of December. She is and always was human. She is not an endless font of goodness and empathy and kindness. She has all of those things, but because she's nurtured them. Because she cherished them. Because she wanted to be good and empathetic and kind.

With his actions, he has been stealing the opportunities for humans to nurture the virtues he so loves. Then he has been condemning them for not being good enough. He wants to know how she was able to be so good when all of the humans he's met aren't? Here's his answer, or at least part of it, and it's very simple. December is very fucking far from Julai. She was safe and comfortable enough to have space to try to be good. To grow strong enough to be good when it's hard, when it sucks. Probably there are humans that are better than she is, that don't need this kind of safety, but it's obvious from her sense of self that she absolutely needed it.

If he'd had his way, she might have been born, but she's not sure she could ever have been the sort of person she is now.

The sort of person who will not kill him, actually. Even though she kind of wants to.

She knows, and is in fact making herself know, that... he didn't mean for this to happen. He was like-a-child, spoiled and impatient and used to always getting his way. He meant well. He always meant well. The urge to defend his sisters and to immortalize her is real and pure and true and is precious and should be cherished.

Just he needs to grow the fuck up about it, because implementation is more important than intention.

Stop it, idiot. Or you'll keep doing this.

Oh. Right. He's in love with her. And there's a good reason for it. Yeah.

And with this context, it turns out that the reason Nai is unresponsive is that he is... doing the mental equivalent of whimpering. Or crying. Or something. He's not hiding, but he's. Extremely not okay. And extremely not wanting to be bothered.

...you know what, dumbass, you made your bed now lie in it. Zash is certain he'll have sympathy for his twin later but right now he actually doesn't want to yell at Nai anymore. He wants to be with his girlfriend it's complicated.

He climbs back up the stairs, pets the door he kicked down in apology, and then walks to the other one (which the doctor helpfully opened for him) then goes downstairs to Yvette's half of the room.

"Hi, love," he says, and there are so, so many different things he's saying with this, and she can hear them now. He is so impressed with her. She is so brave, and so good. He loves her. He missed her. He was terrified but he shouldn't have been, of course his amazing hypercompetent girlfriend it's complicated would figure it out. It was very silly of him to expect otherwise. He's sorry he took so long, he could've stopped Nai if he'd been quicker, and he's sorry she's in so much pain and he will be with her for this.

[don't be stupid Zash]

(It is hard to be perfectly efficient in a complicated world, and he shouldn't beat himself up over it. He's a person. He's flawed. He makes mistakes. But he deserves the same care and treatment he offers to everyone else. He's doing his best, and that's more valuable than all the perfect efficiency in the world.)

[of course I can be your girlfriend/partner/wife/lover]

(It is ridiculous and silly for them to not be together. They're in love. They've got complementary life goals and skillsets. The trouble he's had putting a name to her is [=] to the trouble she's had putting a name to him. How about they stop that and make it official.)

[you're stuck with me now]

[also FUCKING HELL DOES THIS HURT]

[love love love love love love love love...]

[I need to make you a ring to make it official]

[you're alive you'll live forever we can stay together forever] [love love love love love love love]

(He's not even being very stupid, right now, because even self-flagellation takes a back seat when he's so overwhelmed with relief and love and, and, and...)

...oh.

He's crying now.

That's. That's a thing that's happening right this second.

He's not sure when it started, he hasn't cried in... decades, probably. Hasn't allowed himself to. But he is so completely, thoroughly, vastly overwhelmed with feeling right now, he was so scared that she was dead, he tried not to think about it but he's actually very bad at not thinking about terrible things and this was the most terrible possible thing, and now she's. She's fine. She's in a lot of pain, and he's so sorry about that, but she's alive and he hopes she'll forgive him if he even cherishes her pain a little bit because it means she's alive and she's gonna live forever with him and—

Yeah he's gonna be ugly sobbing for a while.

She sends him her love all the while. She's just so glad that he's here. She loves him so much.

And eventually, after a period of time neither of them are in any state to keep track of, her body stops being at war with itself.

[love]

[because I desperately need a shower]

Regenerating all of her cells didn’t get rid of the old ones. Those instead paint everything unfortunate enough to be anywhere near her. She is really, truly covered in her own gore.

[I will]

He's managed to stop crying in that time, but he's not exactly presentable. A lot of the goo she's been expelling got on him, and he doesn't give a shit because she's alive. Back up the stairs he goes.

"Hi!"

He completely ignores Zazi—it's kind of impressive, really, his eyes don't even snag on the Beast's presence, it's literally like they're wallpaper—and he offers Morgan in the corner there a small smile before turning to the doctor. "Is she done?"

"Not completely, but the part that required her to be there connected to the equipment is over."

[I heard that]

[this biteguard is uncomfortable]

Morgan gives Zash a smile back. But otherwise yes she's just going to keep on sitting here in this corner. To keep Conrad from. ... Conrading.

[coming, my love~]

And okay he's perhaps still a little bit mad at Conrad because he unceremoniously turns her restraints into so much scrap metal before pulling them off like they're tissue paper. He's more careful with the biteguard because it's his love's precious face and he doesn't want to hurt her but it is soon enough off.

[good riddance] is what she says of the equipment. Best that this gets destroyed sooner rather than later, so it's never ever used again.

"Thanks," she murmurs, and with the bite guard off she can give him a proper smile. Then she sits up, looking pained. "Nnngh."

[still hurt/sore/regenerating or something]

[carry me?]

She then sends him directions to the room in which she'd been staying, and the wonderful shower therein. Because: holy shit, regenerating every cell in your body several times over is messy.

Of course he'll carry her, even if she could fly he would carry her, he might need to be physically attached to her at all times for the next month. When he's back upstairs he ignores Zazi once again, and this time he's also added Conrad to his list of people to ignore. Morgan, though, he kind of still likes even if she kind of was betraying them in a way? He doesn't know, it's confusing, he doesn't have room in his heart right now for anything other than being in love.

(Nai left his own operating table and vanished away somewhere before Morgan arrived.)