Illia

Illia is a female Imperial found in Darklight Tower. Upon entering the tower she will confront you after she has murdered one of the witches. Illia will ask you if you want to help her with taking out her mother, Silvia, who has been corrupted by the other Hags. After you kill her Illia will tell you to take the Staff of Hag's Wrath as a reward. If you talk to Illia again you can ask her to join you in your adventures, after the deed is done. She is a Mage that focuses heavily upon Frost related spells. Confirmed- Currently, there is a bug in which Illia is no longer recruitable after you send her home. When you talk to her, she will respond with generic dialogue (much like a guard), and you are unable to choose any speech options.