Hannah Overton released on bail after seven years in prison for death of Andrew Burd, 4, from salt overdoseA mother convicted of murder after her foster child died of salt poisoning has been freed on bail, allowing her to spend Christmas with her family after seven years in prison.There were hugs and tears in a south Texas courtroom on Tuesday when a judge set bail of $50,000 (£32,000) for Hannah Overton, who has maintained her innocence since she was found culpable in the death of a four-year-old boy.