Tally feels a little protective of Magnus. Everyone here is kind of in her clique, after all, and Tally wants to shield them from harm.

"It's just not fair. You're, like, totally nice and stuff. If someone's after you, they're an utter bogus dick." Tally doesn't want to defend the pretty regime, but this is exactly the kind of thing it defends against. Pretties aren't attacking each other with fans and swords and hallucinations.