[1][3] In 1892 Martin took on the role of an unpaid research assistant to Professor Sir Richard Threlfall, a family friend.
She worked with him from 1892 to 1893, during which time they produced a paper, "On an Approximate Method of finding the Forces acting in Magnetic Circuits", which was published first in the Journal and Proceedings of the Royal Society of New South Wales,[4] and then in the Philosophical Magazine.
During this time she published a paper on gas expansion in capacitors in the Proceedings of the Cambridge Philosophical Society (in which she is called "Miss Martin").
[1][10][11] In 1905, Martin met William Cooke Daniels, an American explorer, veteran of the Spanish–American War, and millionaire department store owner.
After Daniels married Banner in 1907, Martin began living with them (primarily in England and France) and travelling the world with them.