She was married to fellow screenwriter William Pigott, who later got involved in real estate after leaving the business.
[1] Dorothy was born in England in 1877 to D'Oyly Rochfort and Constance Caley.
The family immigrated to the Canada in the 1880s when Dorothy was a girl,[2] and eventually made their way to Sausalito, California, where Dorothy married William Pigott in 1910.
[3] Dorothy and William worked on a number of Western films and serials at Universal during the 1910s; Dorothy's last known screen credit was on 1920's Hair Trigger Stuff.
She died in 1924 and was buried at Forest Lawn Memorial Park in Glendale, California.