Walker was known for her collaboration with Australia's only recipient of the Nobel Prize in Literature, Patrick White. She appeared in the original cast of three of his plays, Signal Driver (1982), Netherwood (1983), and Shepherd on the Rocks (1987), as well as major revivals of The Ham Funeral and A Cheery Soul. Additionally, Walker played the lead role in his film The Night the Prowler (1978). White also wrote an unperformed play sequence for her, entitled Four Love Songs.[5]