Try to keep your spirits up. I know its hard, but you can't rely on your Mom, so rely on you.
You should try to develop a secure line of communication with your Aunt. Given what your mother has done with your mail in the past, I wouldn't count on anything she can get her hands on.
Rather than have her send you the money, ask your aunt to purchase you the ticket. She can buy a ticket in your name. Do some research, find a good fare and pick your travel dates. Once she buys it, all you need to do is get to the airport with your identificaiton in hand. Sell some of your possessions (maybe even some of Mom, haha!) and pack just enough stuff to get you started back home. That way you will have a little pocket change for your travel (taxies, food, any baggage fees, ect).
Good luck!