For a minute it's clear that there's something missing, just like there was when they woke up the next morning and he didn't realize she would have been hurt. 

He watches Deyne's face, and feels what Pradnakt is feeling, and he doesn't understand, he's trying to dig through his memories to figure out what's happening

and then something catches up with him and it makes sense, very suddenly.

"...oh."

You needed it, Love. It sounds hollow even to her, but she's not sure what else to say.

I don't know if there's anything we can do for her, but... we can try, if you want.

He did. And this happened anyway.

And he didn't see it. It didn't even occur to him, not for a moment.

He thought he had the power – but he doesn't, because that didn't belong to him after all, it belongs to them (and three of them, now, not just two) because he made it happen and they hurt and he doesn't want his arm to belong to someone else–

He slowly removes his hand from the device, where it had somehow made its way.

He has to look whole while someone else is in the room.

maybe    if there is something

"The pump. Is that...happening today?"

She stays calm, focused, lending him her strength and stability.

"That's already taken care of; I have a hypospray with me if you'd like to learn how to refill it."

“Oh,” he says distantly. He didn’t even notice it happening, at the time. “Yes. Please.”

Loading the hypospray is simple, and applying it is even simpler. "You can keep that one; we'll give you a packet when you check out that'll tell you what to replace it with if you need to."

“Thank you.”

There are a lot of thoughts that want to be had and they have to wait their turn. Right now he’s thinking about nothing.

“How far are they, on the arm?”

"It's coming along nicely; they'll have it for you tomorrow afternoon, I think."

He nods. (He can still keep it, he tries to remind himself. No one is going to realize it’s not really his and—    take it off. That’s probably not even true.)

He wants to apologize, but he doesn’t think that’s enough, while he doesn’t know what else to do.

“Why were they scanning both of us?”

They're definitely not going to do that, I won't let them. It's his anyway, but even if it wasn't, there's just not a question of whether he gets to keep it.

"We noticed during the surgery that Lord Pradnakt had a mild heart murmur. It seems to have just been from the stress of the situation, but we wanted to keep an eye on it in case there was something more concerning going on."

That's weird. But - I'm fine, Love, I would have noticed if there was something wrong with me.

That’s still concerning.

(He’ll think about whether he caused this to happen later. He is thinking about nothing.)

“...if there were, what would it be?”

"It would be some kind of heart problem - murmurs aren't a very specific symptom, and they're common even when there isn't anything wrong. We can do a more comprehensive scan if you'd like the reassurance, but if you haven't noticed any other symptoms - weakness, shortness of breath, chest pain - then it's probably nothing."

She really is sure she's fine, and he needs to see that too. "Yes, we'll do the scan."

"All right. I'll schedule that for this afternoon."

"Good."

“Was there anything else we needed to know?”

"That's it, unless you have any more questions. I'll have information about prosthetic maintenance classes for you this afternoon."

“Okay. Thank you.”

Just a little bit more.

He nods. "Don't hesitate to call the nurse's station if you need anything."

He goes -

-and Pradnakt scoops him onto the bed, bundling them both under the covers and wrapping herself around him.