Patty is the girls mother. She died in 1978. She married Victor and gave birth to Prue Piper and Phoebe . Then she had affair with Sam her whitelighter. This created Paige Halliwell. Patty has the ability to freeze time. Her mother is Penny or grams Patty was drowned by a water demon at a camp. Prue was a little girl and was forced to watch her mother be killed. Prue developed a fear of water. Patty visits the girls when they need her or on Special occasions such as Pipers Wedding