Mary Winkler has gotten custody of her three children just in time for school to start. You’ll remember Winkler as the lightly-punished killer who was convicted of slaying her husband Matthew 2 years ago. Winkler was sentenced to 2 years in prison and served only 12 days after her conviction. The light sentence was shocking and surprising to even the most liberal feminists. The three children, in the house when Winkler shot her husband in the back, had been in …