Hello Jerred.
I recently was in almost the same situation you are in right now. When I was in college, I felt trapped also because of money issues. I ended up not finishing my classes and dropped out after my first year because I was terrified of the thoughts that were in my head. I have old fashioned parents of whom are in their 60's, and although I have not came out to them yet, I am pretty sure that they will be supportive. I feel bad for the parents who can't accept who their children are, it is the parents job to love. Actually, its not even their job, they are just supposed to be huge conglomerations of love itself, unjudgemental love. But we all know how unrealistic that is.
On that note, you shouldn't let your mother stop you from being you. It isn't her life, it is yours. If she can not see that simple fact, or come to terms about who her child really is, then I feel sorry for her.
Transition in itself does not happen over night. Take the baby steps, and one day you will see that you are getting closer and closer to your destination, just keep in mind of who you really are and don't let anyone get you down, no matter what is ahead of you.
That being said, I can understand being afraid to move forward because of lack of money, right now I am in between jobs and I am scrambling to find another one so I can go to therapy... and pay rent and junk...