Diane Reilly was the sister of Victoria Hutchinson and the adoptive mother of Dom Reilly. Victoria cheated on her husband, Edward Hutchinson, and gave birth to Dom in 1979, but put her name and Brian's on Dom's birth certificate. Victoria gave Dom to Diane to raise, and the three kept Dom's real parentage secret until Diane's death in 2005. Diane left Dom a letter, revealing that he is Tony Hutchinson's brother, which Victoria confirmed when they confronted her.