After having one of my players enthralled by Al-Sedexus, she disappered. I went back to her altar later and tried to bring her back with another bottle of the dark potion, but it deosnt; work. How can I get her back so i can kill her and release her hold on my character?

She is in a place you didn't look. That is, she is in the first place you found her. Let us know if you need more info. They call it the Rapax Rift. You know, where the bronze guy was.

Thanks for the quick response, but I'm not following you. Where is she?

OK, I'm not sure where you are. You have to leave the Rapax castle and courtyard. She is in that temple thing next to the portal that got you to the Rapax castle. Bear in mind, you have to kill her very quickly. If she calls (creates) Templars, that can cause a problem. There is alot of stuff about this, I recommend just trying it and keep a good saved game before you try it.