If this was a woman and son living in social housing on a low income, social services would have been informed a long time ago. Or any man with his young daughter come to that.
Every photo of them together they are posed like lovers , the photos he takes of her pouting and half naked /topless are just soft porn. I would not want my sons(or my daughters, for that matter) to even see pictures like that of me, let alone take them.
My son is gay, I haven't, or ever have had, an issue with anyone's sexuality, young people should be able to learn about and explore theirs in a safe supportive environment, her totally inappropriate behaviour does not provide that.