Lesbian Web of Evil by Harry Gregory

The Two Women Hated One Another, But Their Compulsive Sexual Attraction Kept Them Together Until A Violent Death Exposed Their Ugly Secret To The Entire Town

From the back:

The only person Wilma had ever loved was her father; and he’d sent her away because of it. Years later, when she heard of her father’s trouble, she hurried back to the morality-ridden town of her youth; she would help him — no matter what she had to do. And her scheme was to result in a town scandal that no one would ever forget!

Inside:

The touch was the touch of death. Sudden death. That aroma was a mixture of heady perfumes, fragrant, female, frankly sexy. Sound-point, counterpoint-a young girl’s heavy breathing, the steady pitter-patter of shower flow pelting flesh and bathtub porcelain. The taste was the dryness of fear and horror, salt-flavored with unshed tears, sour with the bile of nightmare nausea. And sight. The unseen scene. A small motel room, bath adjoining. The room dark with night, the bathroom bulb-lit. Half in, half out of the tub, bent backwards with hair cascading into the small puddle forming on the floor, sprawled the body of a young girl. From just under the swell of one scarlet-tipped breast protruded the handle of an ice pick. Her eyes were wide open, staring. She was dead.