Dinah looks over at her, not losing her rhythm, but honestly questioning. Why on Earth shouldn't she help her? She hangs out with Bats and former Bats and Helena, who has Battish tendencies despite professing not wanting to join that stupid club, but she's not used to people questioning her motives.

"Didn't you ask me to be your teacher?"

That's a powerful word, in Dinah's vocabulary.