Good luck! I had an experience once that might give you hope. (It taught me a lot, that's for sure.)
At one point during college, I had enrolled in summer school and was counting on being able to go. Something in the financial aid process got screwed up, the money "wasn't available" and the financial aid office said, even though they knew the money would be available eventually, they wouldn't let me register.
I was standing in the hallway, outside the Dean of the College's office (not really aware of that) raving about the injustice of it all. The Dean heard me and came out of his office to ask what was up. He then invited me back in to his office, called the financial aid office and told them he had a student with a problem and HE thought they could fix it. They did. Immediately. Holy cow, who knew?
I've taken that incident as a sign that there are a lot of "unfixable" things that can really be fixed, if you can find the right advocate. I'm not really likely to take "no" for an answer, until I've pursued things as far up the chain of command as I possibly can.
You've had a lot going on in your life. That's why this is so much different than high school. (Remember the stress cup!) You're doing the best you can, under the circumstances. If you can't re-enroll full time, right now, maybe you can find a part time job and take (or retake) a class or 2 to pull up your GPA. Your first priority has to be getting yourself where you need to be, mentally. The rest will follow, just maybe on a different time table than you thought.
Hang in there and keep us posted!