Patty Halliwell

Patty Halliwell was the daughter of Penny, and the mother of Prue, Piper, Phoebe and Paige. Patty died at the Skylark Camp - a Summer camp for children. She discovered a water demon killing in the lake there, and took it upon herself to destroy it. However, she died trying, drowned from the inside by the demon. Years later, the Charmed Ones encountered and destroyed this demon, avenging their mother's death. Like her deceased mother, Patty's spirit frequents the Charmed One's attic often.