[It occurs to me to ask if we're being exclusive. I'm going to guess "no, that would be too conventional and then we'd have to have a confusing conversation about whether sinister experiments constitute cheating".]

Bridget's power just working on her makes sense to me. She was kind enough to let me try to break her wrist. It didn't go. Nothing happened to me, her wrist just wasn't a breakable thing. I'd be vaguely curious what would happen if I made an attempt at attacking the little bird's niece - I imagine her wrist wouldn't break either, but it might not-break in an interestingly different way.

How long have you known all these various magical people?