Cover for a fantasy book featuring two sorceress sisters with long red hair and

Cover for a fantasy book featuring two sorceress sisters with long red hair and green eyes, one of them carries a staff with an emerald on the tip and has her hair tied in two buns; and the other carries a bow and arrow studded with rubies and has her hair completely loose, no buns. Two Wolves, one with brown fur and black eyes and another with white fur and red eyes protect them . In the background of the image, a group of vampires hide in the shadows and only their red eyes are visible