I don't think that she's gone because of the forum conflict. Just before leaving she mentioned some disaster in her private life. When such things happen, people usually want to change everything: lifestyle, furniture, hair color, forums, i.e. "to start a new life".
That is my personal experience. Twice in a life I abandoned all my favorite forums at once and both times it was connected with my private life in reality, not with my forum conflicts (even though there were conflicts sometimes).