May Collins' partner-in-crime. Willie was a fence on the outside and runs a bartering business in prison. Willie is something of a snob, and often antagonizes the women with her supercilious attitude. She got amnesia but it went away, she pretended she had it again so she can get released but Ann tells her she can get 20 more years in prison if she is lying Willie is shocked when she heard that then Ann realises that she is faking. When offered the opportunity of a full pardon, May and Willie worked with the police to try to expose a new criminal syndicate, when May was shot and killed, Willie made sure everyone at Wentworth knew and left the series feeling she no longer had anyone who cared for her. She returned for a surprising, one-off appearance later in the series as an employer whom Joan Ferguson goes to see for a job, and Willie laughs straight in her face.
Kirsty Child also appeared in 'Prisoner' ep 1 - 30 playing Officer Anne Yates.