Yay Grad school!!!!!!!!
I totally support it! Go back, you will love it and hate it at the same time. And you will have to visit www.phdcomics.com
to relieve stress. Couple words of advice from someone in their third year of their PhD (I am on a bunch of advisory comittees)
(1) If you are in a thesis oriented program, arrange a supervisor early and make sure it is someone who you can work with professionally, you don't want a friend, you want someone organised who will get in your reference letters as projects on the deadlines, ask around with upper year students
(2) Apply for every scholarship you can, exploit that fact that you are a woman or if you have any learning or other permanent disabilities. Tons of money out there for women in science
(3) School debt is good debt, it sucks but it is worthwhile debt, you will get a job that will pay it off quickly.
(4) Try not to do more than ten hours a week of Either TA'ing or RA'ing. If you get either job don't let them push you around.
(5) finally, great book, "finishing your thesis in 15 minutes a day" its an easy read that will help you come up with some great strategies.
I can't wait to hear how it all goes for you!
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
Dr. Seuss (1904 - 1991)