Texas

"It went off."

"It" is not an animate thing. "It" is not capable of firing itself. "It" is a mechanical object whose function depends on an outside actor moving it's parts to cause its actions. "It" is a gun and someone loaded it, handled it, and pulled "It's" trigger while "It" was pointed at your daughter. "It" didn't "go off". You fired a gun at your daughter. Intentionally or accidentally, with malice or negligence, it really doesn't change the fact that you killed your daugher.