Martial Peak - Ch. 928 - Satisfied her vanity

[MangaDex]

 

[JoeGP]

when is she switching back to her male disguise ? sooner or later she will have to introduce herself to someone and then her big secret will be out, but she doesn't seem concerned at all, for someone who killed 2000 people for a lesser secret this is really strange.
Or is the headmaster aware of her secret ?