Article continues below advertisementMartin Short's daughter, Katherine, wrote a suicide note before tragically ending her own life at age 42.Authorities told an outlet on Thursday, February 26, that the social worker was discovered behind a locked bedroom door with a "note" and a gun close by. It was also reported that a friend had requested a welfare check after not hearing from Katherine for "24 hours." Article continues below advertisementSource: megaMartin Short's daughter went silent for 24 hours before her body was discovered.