I have done this fight when it went live on the retail servers because of some friends, even tho I didn't get a orb. Haven't spoken of this outside of BG since I was asking about strats, but..It's a fun fight.
The only reward however is titles; "Unsung Heroine" if you beat it once, "Epic Heroine" if you beat it twice and beat the fifth battle with all of them. Only thing to really look out for is Mumor; she has this instant death move if you're far away (that got me a few times). She makes it very obvious when she's going to do it, though; she does a three line trash talk that makes it very obvious you're in for a butt-kicking. It can be run away from or you can avoid the death part if you stand on top of her; it'll do damage instead of kill if you're that close. And I mean right on top of her. However, this fight is FUN, you don't lose XP if you die, and I wouldn't mind doing it again. :3
If you need more info, BG Wiki is the only place sadly with information on it. I suggest that any dd you bring be decently geared and know exactly what they are doing. I don't think you NEED emphs, so don't worry about that.
Edited, Aug 22nd 2012 7:07pm by maryadavies