Why is it my favorite side? I don't know these people don't put anything on me.

Context will only clear up one thing, why did she put her hand on the glass and if you could argue it was simple battery. Which would be unlikely because most judges find frivolous charges like that unnecessary without some kind of history of actions or whatever. Putting your hand on someone's glass in an isolated situation is not simple battery.

On the flip side responding with violence because a hand was put on your glass is likely assault. Escalation, specific intent to harm and multiple violent interactions require zero context. We don't need to know anything for that.

If he was afraid for his life his body language and the rest of his actions didn't support that. She never prevented him from leaving.

If you think in any situation his reaction is understandable you're being completely stupid, there's no reason to put your hands on someone like this in this situation.