Wikipedia has an article related to:

Mary Kay Bergman (June 5, 1961 – November 11, 1999) was an American voice actress and voice-over teacher who voiced Daphne Blake from the Scooby-Doo franchise from 1998-2000. She provided the voice of Jessie's yodeling in the Woody's Roundup TV show in Toy Story 2. She suffered from bipolar disorder and committed suicide by shooting herself.

Community content is available under CC-BY-SA unless otherwise noted.