What would you do in this situation?

Alright so this may get a little confusing but please bear with me.

Anyways my brother and I both work at our church, he with the older kids (6 and up) and me with younger ones (1-2 year olds). Almost everyone was gone out of town due to our annually youth trip so in my brothers room it was only him and one of the other adults. The lady in my brothers room asked him to bring his ps4 since they didn’t have much for the kids to do. He brought it and they played fortnite and Minecraft but then they decided to play Mortal kombat. They asked all the kids parents for permission except the oldest kid (10 year old). They asked the kid if he allowed to play it and of course he said he could even though that turned out to be a lie. That kids dad came in and saw what they were playing and he got mad. The teacher went to apologize after all the kids were gone and the man went off on her calling her a witch and saying that she was opening up the gates to hell. He basically verbally attacked her and upset her to the point where she was in tears and sick to her stomach. While yes she should have asked his parents I don’t feel like this warranted the attack that was leased on her. What do y’all think and what would you do if you were in either the parent or the teachers position?