I think you might be right.
Did anyone else see the argument between them on the night of the murder?
They started off bickering on local news thread, and then iirc she created a thread in the misc forum called something like "oi snake, get in the ring" where the argument continued until about 1.30 am. I thought nothing of it at the time, they both admitted to being drunk and I don't think it was a serious argument, but it was quite disturbing to find out that she died shortly after.