That was really just the last straw, as they say. The main things were issues with our housemate at the time. The way it worked was the guy I still live with [albeit in OP] was friends with another guy from a few years back. They lived together. Then the friend got engaged, and also got shipped to Iraq about the same time. So we're now living not with him, but with his girlfriend, who was decidedly less than pleasant. She didn't pay rent, she didn't clean anything, about all she did was bitch about anything and everything, and eat our food. We couldn't touch hers, oh no, but she'd eat ours without asking, etc. She even on occasion bitched us out because we bought food that she already had [the food she "had" was some of what we bought]. We got into a habit of saving receipts so that we could show her exactly what we bought and when.
And other things, too. She decided [when my current roommate and I were gone for a day or two] that his fishtank was too loud, so she turned it off [hey, guess what ? dead fish]. My roommate also has an older cat, it already has problems with anxiety, so he'd leave the light in his room on so it wasn't dark all the time [we always had curtains and everything up, as we lived on the ground floor]. She'd come into his room while he was at work and turn off his light, any electronics in the room [computers, clocks, etc]. Just blanket unplug everything. He was about 2 days away from buying a deadbolt.
She'd leave her laundry in the washer/dryer for days on end, sometimes as long as a week. And we weren't allowed to touch her laundry, no. But she could do whatever she wanted with ours, which mainly involved throwing mine [one freshly-dried, one freshly washed, and one waiting in line] all on the floor so that she could do her laundry.
I suppose the worst/funniest was when our neighbor's had a water problem. It came through a bit into my bedroom [under my bed], so I have these nice water stains on my box spring now. It also went through the ceiling of the garage, down the wall, and over the freezer. My roommate had some dry ice in the freezer at one time, so she assumed that the freshly frozen rivulets of brown ice were from the dry ice, and basically came up and told him that he needed to replace all her food in the freezer. For those of you that don't know, dry ice doesn't melt, it sublimates. It goes directly from a solid state to a gas. There is no liquid state for dry ice, except at great pressure. She simultaneously told me that I was going to have to replace the carpet in my room, and that he was going to have to replace the drywall in the garage and all the food in the freezer [which was probably fine anyways, it was all sealed].
We honestly entertained the thought of moving without telling her, just pack up all our stuff [including at the time 4 computers, and a 52" TV] and have it all gone by the time she got home from her tremendously difficult 15-20 hour/week babysitting job. I really would have liked to see her face when she walked in and the TV and such was gone from the main room. It would have been great.

But we didn't, my roommate still told his friend [the one in Iraq], who told her. Then she got all complainy about how she didn't want to live by herself in Grandview, so we basically told her to her face that she shouldn't have been such a bitch, then. Really the only correspondence we have with her now is of inconvenience, mail sent to the old address, things like that. I can't say I've missed her.