I normally go to a chatroom which I have attended for 5 years and happen to have a close friendship with one of the other attenders of the chatroom whom I met at an adult Asperger support group. Recently though, he had invited another woman from the support group who has been known to wreak havoc on a few attenders by moving into their homes and taking advantage of them by refusing to leave. She has also been known to compulsively lie and manipulate people to get what she wants. Finally, this woman had also been known to sexually assault a male with a severe disability in his own home when his wife was not home. Meanwhile, my friend explained to the leaders of the chatroom what he did not trust her and so he invited her into the chatroom since he didn't feel safe seeing her in person.
When reading her postings, this woman claims to be homeless and has a self-diagnosis of Asperger's Syndrome. She also has posted a web page with a piece of paper with a photo copy with all her IDs and photos of herself with the word, "HELP, fugitive on the run."
So far, she has three restraining orders placed against in a county for the state of Georgia and does not really have Asperger's Syndrome. According to her former victims, she appears to really be a psychopath who enjoys hurting other people to get what she wants no matter what the costs.
In response, I am rather scared of her and mildly upset with my friend but I know I cannot tell him what to do. However, I really feel that it would be best to contact and notify the police. Does anyone agree? If not, how should I handle this?