Demonsoul.

Erica is being haunted by nightmares nearly every night. She dreams of ritual sacrifice, black magic and a mysterious red-headed woman. When the dreams start to invade her during the day she is persuaded to visit a hypnotherapist, Dr. Charles Bucher. Bucher's specialty is age regression and he soon discovers that Erica was a vampire in a past life and the red-headed woman is Selena the vampire's servant.