You literally just walk back into the police station (immediately after leaving after finding out about Author, even) and talk to Candy. She'll have Brax captive and will just straight-up offer you the option to turn him into a girl, and then a bimbo.Am I the only one who can't figure out how to transform Brax after his part of the quest?
It's really not complicated. Just take two steps into the building and talk to her.