Kellie Waymire's cause of death

"According to the LA coroner's office, Kellie died from a undiagnosed cardiac arrhythmia, probably related to mitral valve prolapse (MVP). She had been diagnosed with MVP, as many women are, when she was a teen. This is normally a benign condition but appears to become much worse within the last few years resulting in an enlargement of Kellie's heart and eventually her sudden death. There was no warning of this as Kellie was very active and displayed no apparent symptoms."