mcalistershaun
I've been thinking about the problem you describe and I am pretty sure I know what it is.
Your mother has effectively taken herself to a dark place from where she no-longer feels constrained by the negative effect of what she says and does has upon others, especially you.
She has lost control over you and probably her own life. So she is puting herself into a rut from where she can attack whatever she cannot control.
Now, if I may make some suggestions.
Consider your immediate objectives.
To finish college. Really important.
To continue living where you are until then. Necessary.
To find better strategies to deal with your mother's constant attempts to destroy you.
I suggest you need to reconsider your relationship with your mother.
She is no longer a caring person. She has no real interest in your welfare. She is attacking you using the tools she has. Her intimate knowledge of you personally. Your apprehension over your sexuality and transsision. And ultimately, your need for a home.
Transision is important to you, but college is more so. Transision can wait, but college can't.
So, put transision on hold. Don't go back too much, but put further progress on hold until you finish college.
Try to identify those areas that she uses to hurt you. Does she get you into conversation then launch into an attack? Does she suddenly change the subject to a personal attack?
If it helps, try to think of her as a really difficult landlady. You have no choice about staying there, so you just need to find new ways of dealing with her awkwardness.
Find reasons to not ne with her. Staying in your room with a load of books. Gradually spending more time with your friends or others. Just not being in the house quite so often. Do this slowly though or she will notice.
Learn new ways to speak to her.
If she tells you to do some household chore, do it quietly then leave the area completely.
I'm not going to tell you it's going to be easy. This will be a really difficult time for you.
When you need to let off steam, vent I think Americans call it, try to get onto here or find some outlet.
But remember, what she is doing is for herself. You just happen to be in the line of fire.