A Watertown mother is pleading for change. She believes that if Wisconsin's gun laws were different her son would still be alive.In 2021 her son, Henry Teuteberg, was shot and killed by his father during a parental visit. Henry's father also took his own life. Jennifer Gaspard says the tragedy happened after she raised concerns to police about guns in his home. Gaspard wrote to TMJ4 to tell us about her petition which she hopes will urge lawmak…