I *think* the winter ring from King Boreas' Treasure Room is an alternative way to release her. But of course it's a pain to get in and to actually get the ring you need that other bloody amulet in the chest near the well behind the frozen gate which is part of the wishing brothers so an all around pain in the ass....and I could be wrong....although I'll try it on my next playthrough because I don't want to destroy the super awesome staff of awesomeness to release their asses.
Last edited by Darth_Trethon; 21/07/14 11:40 PM.