Miss B, I feel your pain. With the exception of your hospital experience I have been exactly where you are.
It hurts to lose your family for any reason; it's particularly painful when they self-righteously shun us because of a religious delusion.
My only suggestion is to begin forming new friends. You can and will find people that love you for WHO you are, and not for WHAT you (pretend to) believe.
It gets better.
Oubliette