I have a cousin who is my only cousin of MANY that is my age. When we were small we played together a lot. In our adult years, we haven't really kept in touch much. She has Borderline Personality Disorder, which I know creates a lot of problems in her family. She's had her kids taken from her, and most of her immediately family has distanced themselves from her because of all the problems she's caused. I am distant, literally, I live far away from her, and when she friend requested me on Facebook I saw no reason not to accept. I knew she has emotional problems, but I still love her of course. Lately she has posted some incredibly rude things on my Facebook wall. She insults my photos, or makes snide remarks on my looks. Or she'll interrupt a thread between me and my friends to type things like "boring..." or "whatever". I talked to her mother, who isn't at all surprised and said I should just unfriend her. I feel bad, because I know she's been ostracized from most of the family, so I've either ignored her comments or deleted them. Is it cruel to unfriend her? I hate to be mean, because it's not her fault she's mentally ill, but on the other hand she types some really inappropriate stuff! I feel slightly torn between being compassionate and being just plain offended. Thoughts?