She is the demon Lilith
In the Abrahamic religious/mythologic tradition, Lilith was the first lover of Adam, the first man. She was ejected from Eden for refusing to obey Adam, after which she was replaced with Eve.
The idea of Lilith fed the medieval European folktales of the succubus, a female demon who seduced men in their sleep, sapping them of their vital energies (nocturnal emissions). In this sense she may also be related to vampire myths.