Watts published a poem directed at William Wilberforce criticising his views on women working in the abolitionist movement.
Despite Wilberforce's views, Watts and her friend Elizabeth Heyrick continued campaigning against slavery, including founding The Humming Bird, the first anti-slavery periodical.
Heyrick and Watts would visit greengrocers and other businesses to encourage the owners to not purchase Caribbean sugar and other products produced by slave labour.
[6] Watts' reputation led to her being noted in Mary Pilkington's Memoirs of Celebrated Female Characters.
[5][7] Watts also founded the philanthropical organisation, Society of the Relief of Indigent Old Age, as well as publishing books on the treatment of animals.