Beo, I'd tell you mute her, but I get the feeling that you'd miss half the conversation when she's about because of her ways of dominating it.
Dos knows the rules, but she chooses which ones to break and when to avoid getting silenced or banned by trem or I. It's a shit situation (or shituation, if you will), I know, but no room is without its faults. Do your best to ignore her, and if you feel the need, tell people who are annoying her to mute her in pm. You need not mute her, but you can bypass a lot of headache by conning people to mute her.
Feel free send me copy/pastes of chat, Beo. :/ I'll do whatever I can to stop some of the nuisances.