I'm writing a story about a life of cross-dressing being forced upon a boy by his mother and his sister. When chapters are written when no sex is involved, I use the transvestite/transsexual category. My question is, when sex between the family members occurs, yet the forced cross-dressing is still a major proponent of the story, does the incest category trump the transvestite category, or does it remain a transvestite tale? Thanks.