Future mother-in-law being VERY rude. How do I handle it? HELP!?

I am getting married in November. When my fiance and I first met, he told me his mother was the most important thing in his life and that she meant the world to him. I thought it was touching that they were so close, and when I finally met her, she was very nice and we got along. After we had been dating a few months, though, and as things began to get more serious, she began to make snide remarks. First it would be about how I hated her, or her dog, or how I wasn't talking enough, or how I was stealing her son. It wasn't joking remarks, either. She would pin me in a corner and ask why I hated her little Yorkie so much, asking if I felt like I was above her and thought I was so elite. For one, I am an avid animal lover, and two, I worked in animal services for many years, so I am an animal person. I have three cats of my own. However, I would visit and be in a dress and she would be offended that I wouldnt lift the dog up and rub it all over me and let it lick my face, etc. I pet the dog, I say hi to it, give it little chew biscuits, but come on. I love animals, but they ARE animals, not humans. I don't think they should be allowed to walk all over me, which is what she expects. Then, more lately, after over a year, she has begun to make comments like "I thought you were on a diet. Looks like you gave that up" or if we're visiting and I make a comment about the news, she'll say "Oh you don't know what you're talking about. You're just a young girl. You are so naive". I hold 3 jobs, one in government, and I have an advanced degree in law. I always try to be polite. She just keeps attacking me, in front of my fiance, in front of others, and instead of respond or defend myself, I just nod. I don't fight back, I don't set her straight, because I don't want to be disrespectful. My fiance goads her too, agreeing, asking why AM I so mean to her when we're there. He couldn't fathom disagreeing with her. I have been nothing but nice, I cooked her dinners, for christmas I hand made a gift basket with decorative items and goodies, I've brought her flowers, etc. My own mother and I had a rough relationship when I grew up, and are not very close, and she'll bring that up, saying I just hate women, and that I need to "get over it". I have many friends, who are women. I just don't like people that try to start drama with me. She called me the other day, left a message to call her back, angrily. Said we had to talk. I don't feel I need to acknowledge her hostility. But what do I do? She is my fiance's world, but she is trying to chase me off. I love my fiance, but how far should I let this go? The rest of his family loves me, we go visit them often. We're always giving her money because she doesn't work, she's always snipping about how I need to be more of a 'wife', when I am already working more than full-time, cooking, cleaning, etc for her son. I dont' want to talk to her. Should I have to? I've tried to tell her I like her dog, I've tried to tell her I don't hate her, I've taken her out to lunch, she just complains or tells me how horrible I am becoming. HELP
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Run! You've got too much education to be putting up with this. It's not going to change. You're going to forever be explainig to you fiance/husband how's she's mistreating you and he's going to be forever telling you you're over exaggerating. Run Forrest Run!
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