A 65-year-old woman who served nearly 6 years in prison for killing her husband and chopping him up into pieces is behind bars for allegedly stealing two containers of baby powder from a grocery store in Dexter.Vella Gogan of Skowhegan appeared in Penobscot County Superior Court today on a violation of probation charge. Bail was set at $5,000. Gogan has been charged twice with violating probation since she was released from prison three years ago. She was charged with murder in 1999 for allegedly killing her husband in his sleep at their Hartland home. Gogan, who later pleaded guilty to a lesser charge of manslaughter, maintained that she had been abused by her husband during their 37-year marriage and shot him out of fear he was going to kill her.