Once cross-server battlegrounds came out, never saw her again. Or any of the other people on the server we normally played against. It really ruined the community built up on our server, and was about when I stopped playing PvP.
So much weird and cool stuff was possible in vanilla. I remember someone kited a Servant of Razelikh into downtown Stormwind. It could only be killed by activating some object back in the Blasted Lands, so a crowd of dozens of guards and PC’s who didn’t know any better just whaled on it for half an hour.
EDIT: Apparently this was not just for lolz as you could level up weapon skill on the thing. Neat!
This is the entire reason battlegrounds were introduced - balanced world PVP was unviable on almost every server. It was one of the primary complaints about the game, and could even have resulted in the loss of the PVP orientated player entirely if it had not been addressed.
I'm not too sure about this, but I think this was also before the introduction of cross-server pvp for battlegrounds.