She was the best female voice actor of of South Park. I was absolutely creeped out when I found out she killed herself from depression. She is also very talented. She shouldn't have killed herself.
She also did a great job as Timmy Turner, as Daphne in Scooby Doo, Toy Story 2, The Hunchback of Notre Dame, Hercules and Star Wars: Episode I: The video game.
Rest in Peace Mary Kay Bergman