 I don't know. Everyone says he's trouble. And in 1998, playing Prue Hollowell in Charmed. The power of three will set us free. In 2015, Dougherty was diagnosed with breast cancer, which later spread, a battle she fought for the rest of her life. Her publicist says Dougherty was surrounded by loved ones as well as her dog. At the end, she was 53. Dave Packer, ABC News.