that sounds like they may have done more then just starve her. And the bad thing is, if you have a full time job/kids, you may not have the time to put into her to bring her back, which means... you might have to trust another trainer. I'm so sorry. But then again, I've taken in abused horses that have come around w/in months. Just wait and see...
"Be a best friend, tell the truth, and overuse I love you
Go to work, do your best, don't outsmart your common sense
Never let your prayin knees get lazy
And love like crazy"