As the other have said - cut your losses and get away from her. She sounds spiteful, will do you no favours and believe me when I say there ARE good people out there. You should enjoy seeing your horse, it sounds like seeing your horse causes you to be upset, why do it to yourself?
As for transport - over here 99% of yards will offer transport. It's in their interest to get horses in, so they are more than happy to do it. If you are enquiring, ask about transport, I'm sure you'll find somebody to help you out.
I would suggest either moving your horse, or suggesting to the property owner that although there are 6 horses, if she wasn't at this property, there is a fairly good chance that other people would move their horses to the yard. By the sounds of her, she's clearly burned her bridges with numerous people, and that will do the property owner no favours to get horses into this yard.