Student or Learner
The translation goes "Are you crazy?" So does "bent" mean "nuts" or something? The girls are talking about bringing another girl back to the team, which Rana thinks is nonsense.
Tais- I think we need to let Maddy back on the team.
Rana - Are you bent? Why? - We need her, for one thing.
Tais - Look at the moves she gave us. - She is a loser, Tais. She lied to us!
I don't think you'll see it very often these days, in BrE at least, with that meaning. It's more likely to mean:
- curved (to describe shape)
- homosexual (slang)
- involved in criminal activity while holding a position of authority (a bent policeman might take bribes for example).