[4] Collins married Robert Keningale Cook (1845–1886), a stockbroker and writer who was associated with the Vegetarian Society.

[1] Collins joined the Theosophical Society in the 1880s and assisted Helena Blavatsky in editing her Lucifer magazine.

[5] It was alleged by Theosophists including Charles Webster Leadbeater that these books were dictated to Collins by Masters of the Ancient Wisdom.

She also objected to Charles Leadbeater's introduction and notes in the Theosophical Publishing House edition of Light on the Path in 1911.

Collins and Vittoria Cremers are alleged to have met Robert Donston Stephenson after his release from London Hospital in July 1889 and lived with him in Southsea during 1890.