In 1859, Howitt married a childhood friend and fellow spiritualist, Alaric Alfred Watts.
The couple later moved to Cheyne Walk in Chelsea, a few doors from Dante Gabriel Rossetti.
Howitt continued to publish regularly, most often in the spiritualist press.
With her husband she co-authored Aurora: a Volume of Verse (1884).
Her book Pioneers of the Spiritual Reformation (1883), consisted of biographical sketches of the German poet Justinus Kerner and of her father William Howitt.
She remained in close to her brother, Alfred William Howitt, who had emigrated to Australia, where he became a noted explorer and pioneering anthropologist.
Acting as his de facto agent in England, she secured equipment, vetted texts, and maintained academic connections on his behalf.

Though the whereabouts of her surviving oil paintings are still not known in 2019, a large number of Howitt's "spirit drawings" — images originated without her conscious control — remain in the archives of the Society for Psychical Research at Cambridge University Library and the College of Psychic Studies in London.
Howitt was an inspiration to the artist medium Georgiana Houghton.
With the expanding public interest in spirit-driven artists such as Emma Kunz and Hilma af Klint, Howitt's drawings are receiving greater academic attention.

Howitt's family was acquainted with the novelist Charles Dickens, who offered critical commentary on her writing.

Anna Mary Watts died of diphtheria in 1884 at Mair am Hof in Teodone (Brunico), since 1919 part of Italy, during a visit to her mother in Tyrol.
In 1859, Howitt married a childhood friend and fellow spiritualist, Alaric Alfred Watts. The couple later moved to Cheyne Walk in Chelsea, a few doors from Dante Gabriel Rossetti. Howitt continued to publish regularly, most often in the spiritualist press. With her husband she co-authored Aurora: a Volume of Verse (1884). Her book Pioneers of the Spiritual Reformation (1883), consisted of biographical sketches of the German poet Justinus Kerner and of her father William Howitt. She remained in close to her brother, Alfred William Howitt, who had emigrated to Australia, where he became a noted explorer and pioneering anthropologist. Acting as his de facto agent in England, she secured equipment, vetted texts, and maintained academic connections on his behalf.
Though the whereabouts of her surviving oil paintings are still not known in 2019, a large number of Howitt's "spirit drawings" — images originated without her conscious control — remain in the archives of the Society for Psychical Research at Cambridge University Library and the College of Psychic Studies in London. Howitt was an inspiration to the artist medium Georgiana Houghton. With the expanding public interest in spirit-driven artists such as Emma Kunz and Hilma af Klint, Howitt's drawings are receiving greater academic attention.
Howitt's family was acquainted with the novelist Charles Dickens, who offered critical commentary on her writing.
Anna Mary Watts died of diphtheria in 1884 at Mair am Hof in Teodone (Brunico), since 1919 part of Italy, during a visit to her mother in Tyrol.
Anna Mary Howitt