Crime writer Michelle McNamara, founder of the website True Crime Diary and wife of comedian Patton Oswalt has died in her Los Angeles home at 46. The news was made public by Oswalt’s publicist. No cause of death has been provided, but it’s been disclosed that she died in her sleep.

McNamara’s True Crime Diary covered cold cases and breaking news, focusing on lesser known cases rather than more famous or infamous ones.

She and Oswalt, whose credits include Ratatouille, Magnolia, Marvel’s Agents of S.H.I.E.L.D. and more, married in 2005. McNamara is survived by Oswalt and their 7-year-old daughter, Alice.