This women half-elf is some sort of wizard or sorcerer, but to what extent we dont know.
We met this half-elf in the dungeon of the ruins in Shadofell Keep. She was working with Karalel, the crazed priest of Orcus. She fled before we could kill her but we found some interesting stuff in her personal belongings. Most interesting was a scroll tube containing a note from her real master, known to us only as "P". This Shasharra was supposed to wait in Fallcrest to be contacted with further instructions. Why the "P" was interested in the Shadowfell keep, we don't know but maybe this Shasharra could shed some light on the matter.