Answer:
James Warren, her husband, was elected to the Massachusetts Legislature in 1766. He encouraged her to pursue writing. This led her to keep a low profile by the satirical nature of her plays but to be open as a citizen with her political activity.
Step-by-step explanation:
As a patriot, Warren "began writing political dramas that denounced British policies and key officials in Massachusetts, notably Governor Thomas Hutchinson. Her 1772 satire, “The Adulator" (published anonymously in the Massachusetts Spy newspaper), criticized the British colonial governor’s policies a full four years before Jefferson wrote the Declaration of Independence. Warren also published two additional plays skewering British colonial leaders, Defeat (1773) and The Group (1775.) She supported the Boston Tea Party and boycotts of British imports and urged other women to follow suit."
Reference: Michals, D. (2015). Mercy Otis Warren. [online] National Women's History Museum.