When accused of bullying and harassment, the person immediately turns on the water works and claims they are the one being bullied or harassed - even though there's been no prior mention of being bullied or harassed. It's the fact that this claim appears only after and in response to having been called to account that is revealing. Mature adults do not burst into tears when held accountable for their actions. In some cases people have confessed to being serial killers, even though they cannot provide any substantive evidence of their crimes. Often they will confess to crimes which have just been reported in the media.
Some individuals are know to the police as serial confessors.
The false confessor is different from a person who make a false confession and admits to a crime of which they are accused because of emotional pressure and inappropriate interrogation tactics. Crimes like abuse and rape are difficult to prove at the best of times and their incidence is so common that it is easy to make a plausible claim as a way of gaining attention. The facelessness and anonymity of the Internet suits this type of attention seeker. She will revel in the attention she gains and use her glib charm to plausibly dismiss any suggestion that she herself may be responsible. However, a background check may reveal that this is not the first time she has had this happen to her.