Sophie Nyweide faced trauma in life, her mother claimed, leading her to substance abuse. An autopsy determined she was pregnant at the time of her death.

Child actor Sophie Nyweide was pregnant when she died unexpectedly last week, according to a death certificate obtained by PEOPLE. Nyweide, 24, died on Monday, April 14, according to the Vermont Department of Health. She was found in a wooded area in Bennington, Vt., about 25 miles from her home in Manchester Center.

Former child star Sophie Nyweide, who appeared in the 2009 romantic drama Mammoth has died at the age of 24, it has been announced by her family