This sounds suspiciously like a custody/visitation situation. I'm betting the mother didn't know a thing until the boys were returned to her after Daddy's visit or for her visit.
Dad is identified as JUSTIN GALENSKI.
http://www.bostonglobe.com/metro/2013/11/18/father-slow-get-treatment-for-sons-charged-with-child-cruelty/bPIJimbohcMG1fcxQbnd9N/story.html
Father slow to get treatment for sons charged with cruelty
Associated Press
November 18, 2013
A man was charged with child cruelty for delaying medical treatment to his two sons after they were injured in a car accident, Vermont State Police said. Justin Galenski, 40 of Fairlee, was charged Saturday. He said Sunday that the Nov. 12 crash on a snowy road in Strafford was an accident. ‘‘I love these boys. The sun and moon rises with them with me,” he said. “It was a horrible, horrible night. By no means did I mean to hurt my kids.” Galenski’s sons, ages 4 and 9, suffered concussions, a broken arm, and a broken clavicle but didn’t see a doctor until the day after the Nov. 12 accident, State Police said. Police said Galenski and his sons walked more than a mile to the home of a friend, a registered nurse, who helped assess the injuries. Police were contacted the following day by the boys’ mother.