Sorry for the delay in getting to your post! Had some challenges recently but trying to catch up :D
Some people are just assholes, short and simple. This person sounds like she was likely not raised to be responsible for herself and required to do her own things. I wouldn't take it too hard, because it sounds like they've got some deeper issues going on. You will find many more like this, especially these days where there is far less personal responsibility and accountability than there was before. I'm hoping we can turn it around though, someday!