"I'm of the opinion that family's what you make it. I don't know you very well, but I would say just from talking to you that your pack is your family. The people that care about you, the people that stick by you, the people that love and are loved by you. The people that would do something a little bit crazy to keep you safe and then yell at you for getting yourself into danger. Can you honestly say that that asshole you happen to be related to is your family? Even as he asks you to put yours, your pack, at risk for him? Do you think he cares about them? Or you? Do you think he'd do the same?"

"Of course I care about Derek. You think I killed people for no reason? They destroyed my family."

"They don't care about me. My betas. They didn't choose this."

Oh god damn it, she miscalculated. Why is this so hard. Why can't she just tell the Argents to shoot the fucker so everybody can move on.

"Right, you care about Derek, so you belittle him instead of trying to help him do better," says Yvette, a little tartly. "Okay, fine, they're not - to the point where they care about you as a person. That doesn't mean the guy who thinks it's a good idea to mind control and manipulate a teenage girl into drugging you and using you does care."

"Derek, I understand what it's like to have family you're not proud of. I think I have a clear advantage understanding what you're thinking. My aunt and I were always so close, when I grew up. She was so much younger than her brother; you were practically siblings, right? She was always a bit, intense, though. She was protective, but just a little too sharp. There was always an edge to him. He would do anything to protect you. And then it went wrong. She changed, got scared, got angry. He wanted revenge."

"We just need to know if the town is safe. Can we trust Peter, or not? Maybe he was angry, maybe he's gotten his revenge, maybe he's satisfied. Are we safe?"

"He can't be trusted, and I don't like him. But he's staying here."

"... Might I ask why?"

"He's pack. Boyd, Erica, and Isaac- they're all leaving. I messed up, I didn't know how to be an alpha. I thought- I needed a pack, so I tried to make one, and it didn't work. But the Hale pack is still here. We're not dead yet. He stays."

Yvette looks at Derek, inscrutably.

"... Okay," she says. "I - don't think you should give up on that pack of yours just yet, though. Do you want help?"

"I'll be fine. Go home, and try not to worry. Consider the war over. Is that alright with you, Argent?"

"I'm satisfied. Have a nice life, Mr. Hale. Try to keep your uncle on a leash. Allison, let's go."

"Okay. Goodbye, Derek."

Looks like it doesn't end in murder after all. She's so excited, except also she wants to find a quiet place in the woods to begin screaming.

"Okay," repeats Yvette, taking a deep breath and closing her eyes.

Then she opens them and fixes Peter with a glare.

"But you," she snarls, pointing at him. "Will stay away from Scott and Lydia. And if you fuck with me or Stiles or Derek or assorted familial units you are going to regret it."

"Well, I would never want to do something you'd make me regret. Have a good night."

He puts his arm around Derek's shoulder and they go inside. 

"You too," she manages to say without snarling.

That comes after the two of the Hales go inside, when she turns on her heel and stalks back to the jeep.

"I," she says, "am not sure how the fuck any of that happened, or what I had to do with it, but fuck do I not want that man anywhere near anyone vulnerable, ever."

"Yeah, he mostly kills people and makes your skin crawl. We should go. Make sure Scott and Lydia are still okay."

Yvette's already ahead of him on the way back to the jeep.

"Yep. Ugh. And I miscalculated so badly! I thought he was doing the power of friendship thing but instead he was. Not. At all. And now I just want to hug him instead of yell at him. It's annoying."

"I don't want to hug him, but the way he was talking about family and pack...how many kids has Peter Hale messed up?"

He starts the car. He sighs. 

"You never met Kate Argent, but trust me when I say that you should be grateful one of them stayed dead."

Yvette gives him a very serious look. "Stiles, I thought you were genre savvy. Why the fuck are you tempting fate like that? It's just asking for her to show up again in a super powered evil form at a dramatic moment, and I won't be having any of it."

Her tone of voice barely changes. Yvette: still angry. But being angry doesn't mean she doesn't have a sense of humor.

"Hey, if she comes back, one of them will just kill the other again. We'll be fine. That's one less thing to worry about."

"Sure, they might kill the other again, but how much collateral damage would happen in the interim?"

"You can't be worrying about Kate. The Argents can handle their own." 

"Worrying is not the exact word I want to use. Wary is a better one. I expect that the minute I stop telling it to behave, something in this town is going to cause trouble."

"Yeah. I think that's what happens when all the feuding families pack their bags and leave, and then come back five years later. Everyone is a bit wrong-footed."