What occupation did shelley say kept her from writing, despite her husband's encouragement

Among the reasons Mary Shelley mentioned that kept her from writing included travelling, taking care of her family, and studying through reading or promoting her husband's work. Mary's husband was Percy Bysshe Shelley who was a major Romantic poet.

She called all the aforementioned reasons a "literary employment" that then demanded most of her time.

She spent most of her time raising her child and promoting her husband’s work. She then wrote Frankenstein and it established her career as a writer. Frankenstein became a great work of literature. It has been the basis of many films and remains popular to this day.