Mrs. Graven (first name unknown) is the mother of Ash Graven.
Background[]
Not much is known about her. Like her husband, she is native to Serepentis, and was a loyal follower of the fire snake Werthrent. She, like many of her people, believed that being sacrificed to Werthrent was a great honor for which the sacrificed person would be rewarded. Thus, she and her husband didn't object when their daughters were chosen as sacrifices.
However, when Ash saw her sister getting devoured by Werthrent, the trauma awoke her powers. In her panic, she unleashed a wave of energy that killed several people, including her parents.