<p><br /> Three teenage bullies who killed a woman by pushing a firework through her letterbox after attacking her son have been jailed.<br /> </p><p><br /> Mary Fox, 59, died in the fire in Bodmin, Cornwall on Bonfire Night last year after the Silver Dart was thrust inside to "frighten" the family as part of a prank.<br /> </p><p><br /> Her son Raum, then 17, escaped through a window of the blazing council home in Wallace Road, but his mother died of smoke inhalation.<br /> </p><p><br /> Owen Hewitt 18, and Samuel Luckes, 17, were each jailed for seven years at Truro Crown Court for the manslaughter of the mother-of-nine. They were also each sentenced to three years concurrently for committing arson while being reckless as to whether Raum's life was endangered.<br /> </p><p><br /> The pair "laughed and joked" that the burning house belonged to Raum's mother, the jury heard earlier.<br /> </p><p><br /> A third teenager, Ryan Croft, 18, who pleaded guilty at an earlier hearing, was given five years for manslaughter and two years for arson, also running concurrently.<br /> </p>
