Stiles is like her best friend, in fact. He's the person she contact first when something goes wrong and the one she wants to save first in this case. Maybe she loves him without admitting but it's sure he's the person she is closest in the show.
They've been following us for hours. Pathetic. "Hey Stiles, yeah we're just about to walk into a movie, you know the popcorn and that." I know you guys are right behind us, put me on speaker. "Yeah,okay."