UPDATE;- If she is knocked out at the Goblin Camp before killing Ragzlin she works perfectly fine since she remains a Neutral NPC
- If she is knocked out at the Goblin Camp after killing Ragzlin she will again remain in her 'permanently hostile state' forever and also remain permanently stuck in Ketheric's throne room.
I can't believe I was lucky enough to do the knock out exactly right for it to work.. It really should not have to be this difficult to get her in your party on a goodish run.