"Do you want me to speak to the others for you? I would assume you'd want to speak to Isaac and Stiles yourself, but... If you think it would sound better coming from the Alpha, I'll do it." If they wanted to blame someone, they could blame her - the idea wasn't for Derek to get hurt by the slaves he wanted, over the one forced onto him.
"This will work, Derek. I promise. Once we have Kate, once she's dealt with..." She trailed off, exhaling. "Then I encourage Allison to leave. And if she tries to help Kate? Then... She's dealt with as well. Regardless of what Stiles says."