Echoing everyone else's thoughts, my condolences go out to the affected parties, unfortunate events like this one really make you question the effectiveness of a restraining order and whether the court should be looking for more preventative and less reactive measures.
Condolences to all involved in this terrible tragedy. The Gaming Community is a tight and strong one as evidenced by this thread and many others across the internet. I hope those involved know that an awful lot of us out here are thinking of you.