Some TMNT stuff really isn't for little kids.
Marie Bishop was the mother of Agent Jonathan "John" Bishop and wife of Wayne Bishop in the IDW comics series. She gave birth to her son prematurely and she blamed her husband for never being present and for being unable to do anything to save their son and ease her loneliness.
In 1968, Marie gave birth to her son and were both being treated at the Las Vegas General Hospital. The hospital staff informed her husband that their son Jonathan was too fragile to be expected to survive the night. Marie blamed him for never being present and for being unable to do anything to save their son and ease her loneliness. Later that night, he broke into the hospital and took Jonathan to perform an unknown procedure that saved his life. His son proved to be very intelligent but was stunted and deformed, having reached his full physical growth by six years of age. Wayne had an exo-suit based off of Utrom technology built for John and modeled on his own likeness so that he could live as normally as possible.
Marie has not been shown again in the story, and her fate is uncertain.