I agree with packing up her stuff and telling her to find another place to live. She doesn't sound like she has the type of mental illness where she can't take care of her day-to-day living or be semi-responsible (at least from your description in your original post). It's time for tough love; some kids don't learn from being talked to or yelled at -- it just goes in one ear and out the other, because the talking to or yelling at doesn't actually hurt them. They can tune you out.
Try looking around online for something called "Love and Logic." It's a parenting philosophy that I think could really help you out with this daughter. It has to do with logical consequences. I use it at school, and it REALLY works.
Try looking around online for something called "Love and Logic." It's a parenting philosophy that I think could really help you out with this daughter. It has to do with logical consequences. I use it at school, and it REALLY works.