Who is Milly from A Handful of Dust and what is their importance?

Milly first meets Tony in a seedy bar one late night when he and Jock are completely drunk. Tony spends the entire time he is with Milly talking about Brenda. Jock pays Milly and her friend Babs for her time, so when they are trying to find someone for Tony to have a fake affair with, they turn to Milly. She is well prepared for the job, having done it before, but she brings her daughter Winnie along. In the end it is the presence of Milly's daughter that gives Tony the legal upper hand in the situation between him and Brenda.