I think this is the most important part of the post. It tells me that the OP is not going to fix the situation by adding another field or tweaking her field. Relationship with your PhD adviser is one of the most important things in graduate school. My advice is to contact your undergraduate adviser, who presumably set you on this research path, and ask about some possible ways forward. She/he would be in a good position to advise. Also if you really loved the promise of some of the MA programs that accepted you previously, maybe contact the professors in those and see if they might still be interested in working you in the future. Like someone above said, everyone makes mistakes, and you are probably very young and have everything ahead of you!