[4] In 1905, whilst Wallace was planning to mount a new expedition to complete the goal of 1903, Hubbard put together a team of her own to do the same thing in a bid to clear her husband's name.

The 576-mile trip was an efficient, well organised trek through the Labrador wilderness, completed on schedule,[4] despite weather delays at the beginning of August when they reached the watershed at Lake Michikamau.

In addition, Hubbard made extensive notes on the topography, geology, flora, and fauna of this unknown wilderness.

The couple lived at Wrea Head Hall at first, but in 1913, they purchased The Wabe, a large detached house in Hampstead, London, from its designer and original owner, the academic and mathematician William Garnett.

[4] Hubbard died in Coulsdon, United Kingdom, in 1956 at the age of 86, when she was hit by a train while crossing railway tracks.