Why did her stupid father want to bring her today to the bank. What does he get out of this. She doesn't understand. And she knows she has to keep in mind how she's "not a girl" because if she's a girl she'll turn into one and then he'll know about her power and he must not know. So she's quietly chanting how not-a-girl she is in her mind, which quite helps drown out Professor Haywire's deranged demands.
Not that that isn't worrying. He's threatening to send hostages to another Earth, and he has demonstrated being quite capable of that. It's a particularly effective threat, Sadde muses when she's not being very annoyed at being in this situation and not being able to do anything about it, since unlike killing someone, it's reversible - with his cooperation. It's like killing someone and being the only one who can bring them back.
She's in the middle of wondering why on Earth Professor Haywire decided to come to New York of all places when something goes wrong - she doesn't quite know what - and there's a bright flash, the crackling sound of electricity, and she's not in the bank anymore.