dessoul: nope. later on it gets even destroyed. You can always give her another two hand weapon. Its just, for a long time, her weapon is quite good. Later on, you will have better ones available.
Mastererrant: Figures means you have to plan on that from the start. and the game calls it a Bastard sword so if you weapon focus it that gives you two BS weilders and I doubt there are many great blades in that track.
Yes. an experience, you make during midgame. If i would start again, i would concentrate on some other weapon from the start. two hand swords or two hand axes.
But i don´t know completly. the game crashed before i could finish this quest. I cannot contiune until some patch takes care of that. Could be, that after this quest you find another good one. But as i said, there are really good two hand swords or axes around, which can be better then her sword.