Brother's girlfriend living with us for almost 6 years
I've recently been quite troubled by this and was wondering whether others would find it as troubling as I do. To start, I'm a 19 year old girl with severe anxiety and depression, and I've recently finished high school and I quit my job due to my mental health (I have $4000 saved up, and I rarely spend it. I also have a Summer job). This does play a big part in this situation, so I'm not bringing it up for no reason. I have a brother who's 25 years old, and he dropped out of college around 5 years ago, and he took his girlfriend back with him. Both of them have been living with my parents and I ever since.
Now, let me emphasize the fact that she is the most lazy person I have ever met. In the 5 years she's been living here, she has never worked more than about 16 hours a week, and it currently only working about 9 hours a week. She has no other obligations aside from maybe emptying the dishwasher twice a week. Most of the money she gets from work is spent on fast food, soaps, beauty supplies, etc. She gets mad when my mom brings up the idea of looking for a job with more hours, or attending college or another post-secondary education. She is openly rude to my parents, and will talk badly about my father in his presence because he knows fighting back won't help, so he never says anything back. My mother is afraid to ruin her relationship with my brother (he get's incredibly aggressive whenever my mom talks about them moving out, or her possibly moving in with her father). Her mother is pretty unstable, but her dad has no issues and would allow her to live with him, so it's not like she needs to be here.
Just recently, I got into an argument with my brother and his girlfriend because they wouldn't drive me to take my cat to the vet when she fell and could no longer walk on her leg (this ended up being a torn ligament). They weren't busy or anything, they just didn't want to take her. This made me very upset, obviously, because our cat was howling in pain and they could care less, so I snapped at them and mentioned how lazy she was and how tired I was of their lack of respect for our family (more specifically, my brother's girlfriend). My brother's girlfriend then called me worthless for not having a job at 19, and she proceeded to tell me that I had less of a place in our household than her, because she pays rent ($200 a month... and she eats our food, uses our internet, MY Netflix account, and our shower).
At this point, I simply can't believe this is normal and I'd like to believe that I'm not crazy for thinking she should be out. Any opinions? Advice would be nice. After this event, my mom has been seriously considering just kicking her out, but I personally can't believe she hasn't been booted yet. I just don't think I can deal with this anymore, and my brother called me retarded and said that if I can't handle this, then I'm never going to make it in the real world. I can't be THAT crazy to think that she stepped out of line, but hell, maybe I am.