... can't be done by this ranger with maxxed tracking skill. Even standing on top of her she is not on the tracking list. I found her near the gnome gardener, the posted /loc is correct. Got my necklace and 7 more shells in the bank =)
If you have the map up, its on the part of the ship just to the right of the dock you enter on. and yes, she's on the top level, not inside the ship. a gnome i think, near some gardeners. the loc above (pos 325, neg 175)is excellent.