A lot of people keep saying that JeseC should have automatically known better than to leave her clothes in the bathroom, but if when she moved in with the original roommates and the solution they all came up with and agreed to is that she could leave these baskets in the bathroom, than a precedent has been set. When MaiLee moved in and was told "JeseC leaves her clothes in the bathroom because she doesn't have room in her bedroom" and MaiLee agreed to live in the house knowing this condition, she lost the right to be upset about JeseC not knowing instinctively that this was not something everyone would be comfortable with.
When I was in University I lived for a year in an apartment that was part of University housing. Our roommates were randomly assigned, and for the first semester it was very good, then one of our roommates left University and we got a new roommate. When she moved in, we sat down and told her that this was how we'd always done things, ie cleaning rotation, items in the kitchen that could be shared and items that the owner did not want shared, assigned shelves in the fridge, etc, etc. She asked if we could change a few things (IIRC she hated to mop, which was the former roommates job, so another roommate switched with her), and it was good. That is how MaiLee should have handled it or if she changed her mind on dealing with it, she should have said something nicely.
It also sounds like MaiLee expect that JeseC should do the cleaning to her standards, but MaiLee isn't doing the cleaning herself. Even now with my husband, if he sweeps the floor and I see he missed a spot, I just grab the broom later and sweep what he missed, I don't make PA remarks to get him to clean to my standard.
JeseC, I think the best thing you can do is put into writing that you are unwilling to make 0 noise after 10 pm, but you will do your best to minimize it by not playing loud music or have the tv volume up loud or be crashing around in the kitchen, but you will not go to bed at that hour (don't say why, just say you won't do it). Apologize that the baskets in the bathroom were bothering her but tell her you wish that she'd said something to you instead of throwing your clothes around the bathroom. I am suggesting doing this in writing (perhaps over email) so that she can then look up any words she may not understand. Perhaps cc your 3rd roommate as well, so he knows you are making an effort (he may be supportive of you keeping the clothes in the bathroom, but it makes it easier for him to see you are making an effort).
If you can move the items out until she moves out, I do suggest you do so, but when you have potential roommates coming to see the place, quickly put the baskets back in and let them know that due to space constraints in your room, you need to do this.