On Level 2, after you've cleared out the large room on the west side (with all the trolls and Talona priests) you'll encounter the missing priestess of Ilmater from Kuldahar. She will watch over your party while you sleep and you can rest there undisturbed. Later, you can find her near the exit to level 3 and repeat (especially when you're going through Level 3 and need a safe place to rest.
Cheers,
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Patience, my BUTT...I'm going to KILL something!!!