Mo was killed off-screen in 1992, succumbing to Alzheimer's; her death was confirmed on-screen in the New Year's Eve episode of 1992. Doré was at a New Year's Eve party when she discovered her character's fate. She commented in 2001, "I was at a New Year's Eve party when someone came up to me and said, 'Have you seen, you've been killed off?' And I heaved a sigh of relief and had another drink. Still I can't complain. I had a good time at "EastEnders" and the one advantage of having been in a soap is that I get far better paid for my roles now."