Trust the Psi Corps.
Outineveryway, gosh that's horrid, really nasty to be ignored by your family because you left, and to be ignored also because of sexual orientation is tough.
I should know.
You can't help being who you are, someone able to see through the lies, and someone with the integrity to accept yourself as you are! If you want an L Wrong Cupboard quote, there's probably something in the code of Honour that says, 'go for it, girl friend', or 'I am what I am'.
Just remember that most people leave at some point, and when they start reading and watching TV again, they'll change their implanted thinking and accept you as the wonderful human being I am sure you are.
You can only be yourself, so enjoy being you!
Also keep in mind that vilification of a gay family member is not unique to $cn. Many kids on the streets are there because they have literally been turfed out of home by their parents--and what's the easiest way to get an income? Working the same streets you're walking.