do u have the boney key yet? its at the statue in the main room. go to the third floor and do the sds puzzle (first read the little plaque, and match the sins and pictures by pressing the buttons in the order they were said on the plaque thing.
iirc after you finish the puzzle you will automatically see her... as for the resulting quest from it first you will need to find the master key and check out some previously blocked rooms... past that i have no clue.
