#16: This Is Basic Courtesy
In case it isn’t evident from this post, if you take nothing else from any of this, only use toilet paper in the toilet! Truthfully, I’d have just kept stocking toilet paper for her instead of dealing with the clogs and fall out of a backed-up septic system.
This is one of the first things you need to teach your kids when they start using the bathroom. By the time they’re adults, they’ll know better! It doesn’t sound like anyone taught this girl how to pick up after herself, either, if she was leaving piles of food and dirty clothes everywhere.