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Martin Short has publicly discussed the February death of his daughter, Katherine Hartley Short, who died at age 42 in her Hollywood Hills home.
The Los Angeles County Medical Examiner’s Office confirmed her death was a suicide.
In a CBS Sunday Morning interview and appearances tied to a new Netflix documentary, Marty, Life Is Short, Short described the loss as “a nightmare for the family,” saying Katherine had long struggled with severe mental health problems, including borderline personality disorder.
He compared her illness to his late wife Nancy Dolman’s 2010 death from ovarian cancer, arguing both are diseases that can be terminal.
Short said director Lawrence Kasdan considered delaying the film’s release after Katherine’s death, but Short insisted the documentary — which also recounts earlier family tragedies, including the deaths of his brother and parents — proceed.
Katherine, the eldest of three adopted children, worked as a licensed clinical social worker and was involved in mental-health outreach.
The Short family has asked for privacy as the documentary debuts on Netflix on May 12, 2026.
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Comments supplement the report by stressing that severe mental illnesses like BPD often require long-term, specialized therapy (DBT) and by pointing to new McGill-related research linking inflammation to some depressive disorders. Together they underscore both the treatment challenges and emerging biological avenues that could reduce stigma and expand care options.







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