First Filter
I'd say more mistrust than rivalry. Some of us get on better than others. But it's the sort of thing that just... stays relevant because it still influences everything between us and for a lot of them it wasn't actually that long ago.
Honestly I don't have a clue what her actual thought process is here. All I know is this isn't the sort of thing she'd normally do, but it is exactly the sort of thing Magneto would. And has. Repeatedly. I'm just really hoping enough of them see how crazy it is because she's built up a lot of respect here and the only thing more dangerous than a loose cannon is one that people listen to.