On January 21, 1937, at the age of 38, Prevost died from heart failure brought on by acute alcoholism and malnutrition. Her body was not discovered until January 23, after neighbors complained about her dog's incessant barking. A bellboy, who ignored the note Prevost posted on the door asking that no one knock on the door more than once, finally forced the door open. Prevost was found lying face down on her bed, her legs marked with tiny bites. Prevost's pet dachshund, Maxie, had nipped at her legs in an attempt to wake her up.
