 She agreed to return for another brief stint in 2012, enabling Diane to attend her sister Janine Butcher's (Charlie Brooks) wedding.Lawrence initially quit her role in "EastEnders" to launch herself as a pop star.She enjoyed minor chart success in 1991, when her cover of Donna Summer's 1977 hit "Love's Unkind" (produced by Pete Hammond and Simon Cowell) reached No.