From Skyrim.Serana is an ancient, pure-blood vampire and the daughter of Lord Harkon and Valerica. She is known as one of the "Daughters of Coldharbour."She is enterprising and friendly, but also lonely due to her troubled childhood and her mother's self-exile, which is why she confides in the Dragonborn. Can't stand sunlight.Often questions the Dragonborn's odd behavior such as putting buckets on people's heads to rob them. Serana is cured completely of her Vampirism here after Dawnguard.