 During this time period Bennett began to write a number of short stories and novels , only stopping when her mother died in 1920 . In the mid @-@ 1920s , she moved to California . Because Bennett was estranged from her daughter , for a number of years researchers believed Bennett died in 1939 ( the date of her final letter to her daughter ) . However , new research , including her death certificate , shows that she died in 1948 . 
