She Beast, The 1966 DVD Barbara Steele

A blood-thirsty Transylvanian witch returns from her grave to destroy the descendants of the townsfolk who executed her. For two hundred years her corpse lies in wait at the bottom of a river. A honeymooning English couple crashes their car into the water triggering the resurrection of the witch who launches into a murderous rampage, viciously attacking her prey with whatever implements are close at hand. As the grief-stricken husband searches for his missing bride, a resident of the town informs him that the witch has used his wife's soul to come back to life and that they must perform an exorcism on the monster if they ever hope to see the young woman again. Armed only with this arcane knowledge, the two follow a trail of bloodshed and carnage to the witch's lair to banish the demonic presence and reunite the couple.