A murderer has been jailed for life after setting his wife and stepdaughter on fire and then blaming his dying partner. Ms Sheahan, a mother of six, died and her 16-year-old daughter suffered burns to more than 50 per cent of her body as she tired to save her mum's life. I won't do it," Griffiths replied, before placing the lighter near the ground and setting Ms Sheahan alight. Ms Sheahan was dragged to the bathroom, given a cold shower and then Griffiths took her outside and sprayed his wife with a hose. Ms Sheahan was taken to hospital with burns to 91 per cent of her body, but she died on March 18, 2022, four days after the blaze.