This time get everything in writing. Everything. Expectations for both parties. Don't be the "nice" gal and start pitching in for free as it becomes an expectation. Time is money and the BO will reconsider turning you into a barn slave. Mind you, it can't happen if you don't allow it.
I've seen it happen WAY too much. The barn where I was this time last year had a very nice barn manager, but there were a few people who she cut discounts on board to. She never stated that they were expected to clean stalls in exchange for this cut, but a couple of the people did clean theirs when they could in return for this favor. Myself, on the other hand, paid full board. I love doing stuff for my horse and this may sound snobbish, but when I'm paying for full board I'm paying for the luxury of coming, tacking up, riding, cleaning up behind myself, and leaving. I don't want there to be any expectation that I NEED to be doing anything more than that, otherwise I'd just save the money!
There were frequently times when the barn manager would be really short on time and still have to clean stalls. I'd be around, and she'd be complaining about how no one ever helps out or does anything around the place, how she has to clean all of these stalls by herself, etc. It made me really uncomfortable as I'm sure she was wanting me to "volunteer" to pitch in. I would have helped her out once in awhile on a particularly trying day or clean my stall once in awhile, but I avoided it. Whenever someone did her a little favor like that she would immediately start to expect it. That was not a road I was willing to go down... Sure, it'll make you look like a nice person. But, before you know it you might as well be working another job and paying full board for the time you spend doing someone else's chores! A few times during my stay I fed when she was running really late. She didn't mind feeding and the buckets were already prepared anyway, so she didn't expect that to continue. But, she hates cleaning stalls and wanted to avoid having to do it.
The first problem was that she didn't enforce/get in writing that people with board discounts should help clean stalls. If she had made it a condition of board then she could have gotten folks to do the stall cleaning for her regularly. If she had made her prices set without any discounts then she could have paid someone to come in and clean once in awhile. Then, she made full boarders uncomfortable for not cleaning. People WILL take advantage of you if you allow it. You need to stand up for yourself and your time in the future and recognize that you can't always be the nice person.
All of that aside, that is a really bad situation to be in! I hope you're able to get out soon, especially since both you and the lady dislike each other! I agree with taking all of your belongings home if at all possible. I'd be VERY concerned that she might remove them from the property herself if you don't do it asap... She sounds nutty enough to do it.