deirdre foster, played by patricia brake, is the mother of graham foster (alex mcsweeney), who attends his rape trial in november 2004. when deirdre speaks to little mo mitchell (kacey ainsworth) about her son freddie (alex and tom kilby), she reveals that graham has two daughters from his failed marriage who he never sees. kate mitchell (jill halfpenny) passes this information onto mo's legal team, who ask graham about it under cross examination. graham lies and is caught out, then berates his mother for telling mo. graham is then found guilty.