MIL is evil! Please advise...

Alright, so I have to go on this trip for a week, and my MIL has announced she’s going to be there all but the 2 days she has to work. This is a family vacation type thing my husband has been doing literally since he was 2 weeks old. He’s now almost 22 and I’m almost 20 (yes I know we’re young, but bear with me). We’ve been married for a year and a half, and we have an 8 month old boy and I’m 13 weeks pregnant with our 2nd.

So here’s the dilemma. MIL haven’t gotten along since day one. I don’t know if it’s because I refuse to be told what to do, I’m not the girl she wanted my husband to marry or what her issue with me is...

a little back story, when we started dating she was really weird toward me; and my husband told me she was pissed he didn’t tell her about me sooner (he was 19 there was no reason unless our relationship was serious he should have been expected to tell anyone, especially when he’s never been close to her). So I met her and decided I was going to be so nice to her that she couldn’t stand it.

Well that didn’t work out in my favor, within two months of the initial meeting, she ended up sitting me down and literally interrogating me, notepad, lamp and all for over 2 hours. Now I realize I’m retrospect I should’ve told her it was none of her business and to get bent. She was asking about my parents divorce, how I felt about it, if I would ever consider it, and more obviously, but it’s been 2 years; and that was her main focus. My husband sat right there not really knowing what to do; so I answered her questions to the best of my ability and thought that would be the end of it.

Unfortunately it was not. Once we got engaged, they invited us over for dinner, and I got warned by my now SIL that crap was gonna hit the fan and not to come. Well I didn’t think it could possibly be as bad as she was making it sound, so I went anyway. We ate dinner and no one spoke hardly at all, except my husband’s father who talks when he’s nervous, so I knew I shouldn’t have come in the first place. She sat us down in the living room and handed out two pieces of paper to each of us; it was literally a list of reasons why I wasn’t good enough for her son and why I shouldn’t be allowed to marry him. (Our wedding was supposed to be like 3-4 weeks after this). I was really upset as soon as she “directed our attention to item number 17 on the list” and it said dates I have slept over at his house (I was paying half the bills for the house and it was 2 bedrooms, but I got kicked out of my parents house, and had no where else to go until my grandma offered to let me move in with her until we got married).

So I stood up, told her she had no right to talk to me this way, it was none of her business if I had stayed the night there as all of my stuff was there and I was paying half the bills and furthermore, I didn’t have to sit and take this crap from her. Her husband pointed and said “there’s the door, no one is stopping you.” So I stormed out, sat in the driveway and waited for my husband to come out. After crying and waiting 15 minutes; I left and went to my uncles house. He advised me to postpone the wedding and that he wouldn’t officiate our marriage until he saw some major improvements in my husband’s behavior with his mother and not letting her treat me that way. (He’s a pastor and was doing our premarital counseling).

We ended up cancelling the wedding all together and going to elope instead.

As you can imagine, when she found out, (much to my surprise and enjoyment) she didn’t talk to us for nearly a month.

So then we decided to move from Michigan to Florida, which we did in April of this year. She lost her mind and blew up on me telling me I was forcing my husband to go and he didn’t want to and that I was psychotic and controlling (ironically, what she is. I was so mad I told her to go take a look on the mirror because she must not remember how that looks if she thinks I’m controlling).

We didn’t speak to her for almost a month after that, mostly because she disowned us again, but also because I wasn’t willing to reach out to her when she’d treated me like that AGAIN.

So the dilemma: if you’ve made it this far, thank you.

She is going on vacation same time and place as us. As explained in the beginning. They’re getting a separate cabin, but I want to make it abundantly clear that she is not welcome to see me, my son or be in our cabin at all. If she wants to be around my husband that’s fine; but it will be in their cabin or out somewhere where I don’t have to deal with her. So my question is; how, when we’re sharing this cabin with 2 of my husband’s cousins who want to do big family meals at our cabin every other night and meals at theirs the opposite; do I keep her away from me? I tried to explain to them I didn’t want the big things, and we had agreed last year when we signed on for this that we weren’t letting anyone’s parents in, and then the go and do this? I’m really frustrated and the plane tickets and everything are already bought. I really don’t want to go, but my husband is begging and I feel bad telling him no.

What do I do?