Can I get my boyfriend's mom arrested?

There is a video my boyfriends mom posted. I'm still debating on whether or not I want to post it here because I don't wanna further humiliate him but I think I will so people know I'm being serious. The both of us are 17. We were planning on losing our virginity to each other and we waited weeks because we were looking for places to go you know? In the end we just decided we'll take the risk and go to the car. So that's what we did but he accidentally butt dialed his mom and she heard *everything.* When he got home he got beat super duper bad. The video she posted had no audio but he was cowering in a corner and crying. She didn't do anything abusive because I'm pretty sure physical discipline with a belt is legal. I mean I know many parents who do it but it's how she reacted after. She posted another video and she was threatening to choke him, punch him, and stomp on him and I take those pretty seriously. I just want to know if I can get her arrested for the threats???