I do it every time because she has some of the best dialogue in the game. She is legitimately funny. Also, soul brand is an incredible bonus action.

Knock her out in the goblin camp. She will be alive in Moonrise in act 2. Ensure she is spared by Ketheric and the orc lady. In the dungeons, take over torturing her from the evil gnome ladies and turn on them with Minthara. Then, lead her out to safety and recruit her. Best decision you can make. Save before the dungeon part because it bugs out half the time.