When you get to her in the Goblin base you have to ask her to help you with your condition, and she'll invite you back to her... "office"
. When you get there, she separates you from the party, sees the tadpole, and gives you a "cure" which is actually a sleeping potion. Then she shackles you in one of the jail cells in her private little sanctum (you know where her body guard ogre hangs out).
So you need to go to her for a cure, accept her "cure", and also not be an elf or a half-elf (because elves are immune to sleeping magic and the option will fail if you drink it -- a nice touch that they remembered that I think -- at least so I read here on the forums).
Have to try that with my next non-elven or non-halfelven character.
Drow will not work for the same reason, just so you know.
