I'm sorry that I cannot offer more answers than I am able to, but I'm going to at least try to offer the most support that I can, at least to let you know that, if nothing else, someone read your post and cared enough to type... You're going through a rough time, I'm not going to deny that. Sometimes life sucks, as you've learned first hand. Sometimes it seems like the bad news just keeps coming and we never get anything good around the bend. I've always been pretty optimistic, so it's easy for me to try to say "the glass is half full!", "just keep your chin up, something good will happen" and other cliches, but I really don't think that's going to help you or make you feel any better.
Do you know anyone else who is transgender? I'm not sure if that is causing a lot of issues for you (but it does seem to be causing a lot of family stress), so perhaps being able to talk with someone who was in a similar position to yours would help? Is there some sort of job counselor at your school? Perhaps you could try signing up for an employment agency as well?
I'm sorry hun. I want to help, I just...really am not sure what to say. A lot of what you talked about is how you feel, and although I want to make you feel better that's out of my control.
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So when you're happy (Hurray!), or sad (Aw!),
Or frightened (Eeek!), or mad (Rats!)
An interjection starts a sentence right.