christianne shepherd , seven , and her brother robert , six , were overcome by carbon monoxide that leaked from a faulty boiler as a ` happy and relaxed ' family holiday in corfu ended in ` appalling tragedy ' .
christi shepherd , seven , and her brother bobby , six , -lrb- right -rrb- died from carbon monoxide poisoning during a holiday in corfu in october 2006 .
father neil shepherd , now 46 , went to his daughter when she was heard crying and miss beatson , who is now his wife , went to bobby who was ` whimpering ' that