What psychological problems do these sound like?

First of all from what you are saying it does not sound like you have any psychological problem. Most people in your situation would feel the same way you do. You may be depressed because of all this though. I had alot of problems with my family growing up. First you have to remember that your mother is just a regular human being. Just because she has children she is not a super person who is going to pick up on everything right away. You need to sit her down and have a serious talk about this with her. If she blows it off it's okay. Parents aren't perfect. Find someone else to confide in. The boyfriend was a jerk. I am sure you are a great person with alot of wonderful qualities, focus on those! Not your sisters. If you do that eventually things will turn around.