In 1920 her first children's story "Tommy Bear and the Zookies" was published and the following year she married Andrew Delfosse Badgery.

Despite Blinky Bill's popularity Wall experienced financial difficulties and was forced to fall back on her skills as an artist.

Over the next few years, both her health and her financial situation improved, aided no doubt by the publishing of The Complete Adventures of Blinky Bill in 1939.

In July 1941 Wall moved back to Sydney and the country she loved so much, but her health quickly deteriorated, and on 21 January 1942 she died of pneumonia at her home in Cremorne.

In 1985 a postage stamp honouring Wall or her creation, Blinky Bill, was issued by Australia Post as part of a set of five commemorating children's books.