Prosecutors say Corinna Smith, 59, of Neston, near Liverpool, poured the overheated liquid on Michael Baines, 80, as he slept in their bed last year, according to reports. He suffered burns to a third of his body and died weeks later from his injuries.
Prosecutors told a local court that the sugar “makes the liquid more viscous, thicker, and stickier, so it stays on the skin and causes more damage.”
Smith, who was reportedly “livid” and “furious” at the news of her spouse’s alleged predatory behavior, mixed two kettles of water with three bags of sugar before attacking Baines in bed.
He died in hospital five weeks later after repeated operations and skin grafts.
Smith’s daughter claimed Baines sexually abused her and her brother “for many years as children.” Brother Craig committed suicide in 2007 and was jailed for assault.
He had told his mother that the man he attacked was a “pedophile” who “sexually touched” him, according to reports.
She will serve at least 12 years in prison before she can be considered for parole.