Colene is a fourteen-year-old girl who’s suicidal and has BPD. The primary expression of both of these things is that she feels a deep craving to tantalize adult men with her body--stripping naked in front of them, flashing them, showing off her boobs, offering to sell her body, that kind of thing. The first physical characteristic that is described to the reader (besides her slashed up wrists) are her boobs.
Don’t worry, Piers Anthony makes sure to tell you in elaborate detail how hot her tits are.
( Rape, incest, and general awfulness behind the cut because Piers Anthony is awful and I AM SO ANGRY. )