Detailed Instructions: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Q: This woman is befriended by Lady Aashild, the mistress of Hangen and a supposed witch. Bentein attempts to spread rumors about her and her childhood playmate Arne Gyrdssn after his failed attempt to rape her. Simon Andressn of Dyfrin is jilted by her, though he continues to work on her behalf, even saving her husband Erlend Erlendssn and marrying her younger sister Ramborg. After her death, she converts to Christianity and retires to a convent. Chronicled in the novels The Garland, The Mistress of Husaby, and The Cross, FTP, identify this title character of a saga by Sigrid Undset.
A:
Literature