Welcome, I'm so sorry about your troubles...sounds like an awful situation.
This forum will certainly help! I agree with others, focus on school. Throw yourself into it with the ambition that once you're done, you will have a living that not only has to do with horses, but will provide an income to support horses of your own once again!
See if theres any barns around you that you could just volunteer at...muck stalls, whatever. It doesn't have to pay, just so you can have a horsey outlet somewhere, if possible.