I remember you, and I remember the first time I spoke to you. I helped you find a room in the first week. I've actually been wondering where you'd gone, I was a bit worried. Even though I didn't really know you very well, I'd got used to seeing you around so I noticed when you'd gone. I know others did too.
I know it seems a bit of a small thing compared to all the other problems you've got, but... With regards to studying biology - would the open university work? I don't know if it would, or if you even want to try it, but you said you've wanted to study bio since you were 10. It looks like you still want to. And it's the only thing I can think of [bar you taking books out and reading them without being on a course] that would enable you to do it whilst having the full support of your family in a familiar environment.
It saddens me to read that, and I wish you all the best in your life. I hope it gets better for you, I really do. I hope you work something out.
And if you ever have the inclination to come on and update us, then please do, because I'll be wondering how you're doing for a long time yet.