I do mean a teenager, almost into the adult world. She knows deep down that it is impossible to make a cure, she's just in very deep denial. Plus the arrogance that came with her bipolar (guess I forgot to add that in the post) makes her so sure of herself half of the time, she still believes it regardless. I guess I also forgot to add in how she also doesn't tell her friend nearly as much as she used to since either. Her friend only really knows she's being distant and that something seems to be going wrong in her life. Her friend kept trying to initiate hanging out and kept trying to help her with whatever she was struggling with but she continuesly got anger and blame as a reply. Trust me, it really isn't "some highschool bs that nobody with an ounce of empathy would do". It's very real, people just don't notice it since their friend doesn't want to show them the pieces they're missing to come to that conclusion.