Crysania is a priestess of Paladine, the supreme god of Good. She was sent to Raistlin, hoping to bring him back on the path of goodness. But she failed, and instead fell in love with the mage. He brought her back in time to before the great Cataclysm. Together they could travel to the Abyss, and face Takhisis. Raistlin wanted to take over the evil goddess, but needed a white robed priest to pass trough the portal to the Abyss.
During their journey in the Abyss, Crysania was almost killed, but Caramon came to her rescue and brought her back on Krynn. The poor girl was left blinded, but it is truly there that she could see.
Elistan died soon after, and Crysania took the position of the Revered Daughter of Paladine.