Probably any player that make a dribbler fall and they are behind, I am probably going to go with a push call. College mechanics actually have the "tripping" signal and you could use that appropriately. But because this sounded like a HS game that might not go over very well.
Also I have no idea why there was not a call, I was not there. Maybe the official felt there was no contact. Or maybe the official missed it. That does happen you know.
Peace