Silentpayne: I did as you suggested(walking and using the ring), twice over just in case I missed something. I cannot find her.
EDIT: OK, so I tried to reload all my saves this morning, and every single save I have is now corrupted. This really sucks.
what? why? when were they last modified? the game shouldn't be touching your saves unless you tell it to. were you using DebugMode to try and sort the situation out? you can't save with DebugMode active, you have to turn it off first, or it will mess the save.
I had something like this happen to me in NWN1 during the OC in act 3. Tomi got poisoned or something from a golem, and then it killed him. but, weirdly, he didn't respawn back at temple. or he did, but he just dropped to the ground there. If I would move far enough away from him, he would fade in next to me, but still would just be prone. anyway, eventually it fixed itself when I shut down and restarted the game I think. so it could be something like that.
check the modified date on your saves. if it's not recent, then it could be something to do with the game itself. renaming or your configuration files (nwn.ini?) and then starting the game and then loading your saves, could work.