After being hit with that transformation curse, she was mortified at the idea of being seen in public. As lord of the village she grew up in, your father graciously took her in and ensures that her needs are cared for. Most people just believe she is ill...and in a way, she is. She spends most of her time in the library, whether researching her curse or just entertaining herself with stories...or, during your increasingly frequent visits, entertaining herself with you...