Her 1917 text How to Write for Moving Pictures: A Manual of Instruction and Information reflected and influenced the screenwriters of the era.

[5] This was considered to be an unusual film for a woman director and writer, as it was a "tangled tale of illegitimate pregnancy, abandonment, and murder.

[1] For reasons that are unknown, Bertsch stopped working for the Vitagraph company in 1918, when she was considered to be at the height of her career.

"[1] The film historian Siobhan B. Somerville has argued that Vitagraph's adaptation of the novel A Florida Enchantment, for which Bertsch was the lead screenwriter, reflects this ideology.

Census records from the states of New York and New Jersey suggest that between 1930 and 1941, she was living with various family members and may have been working as a freelance writer.