I think shes no one important, but I wouldnt be surprised if for example, we find her later in a quest, and she's some kind of monster that eats corpses or whatever.
I'm trying to replay Witcher 2 again, but I kind of don't feel like going to boring, bland army camps and dull, bleak Loc Muinne. I'd rather stay in Flotsam for as as long as possible. Then I'll bum rush through the rest of the game.