Spoilers Doctor!

Even Moenbryda is questionable. There was no body, just a mortal wound and a flash of light, Louisioux style. One hypothesis I had was that Urianger getting involved in Ascians was because of Moenbryda. Maybe she's dead... maybe she's now an Ascian too.... maybe he made a deal with the devil to get her back. He did say he was going to grieve "in his own way."