She went on to star in more films including The Safety of Objects and Junk before she decided to quit her acting career.
Jessica leaves behind her 10-year-old son Oliver.
A GoFundMe page has been set up in her memory to raise money to help with expenses and to provide for her child.
More than $22,000 has been donated so far, including a $5,000 donation by Freaks and Geeks’ executive producer, Judd Apatow.
The family have confirmed that Jessica has been cremated and they are planning a memorial for her.
