@Kirin-kun I mean, the mom has known and hasn’t said anything until now, so I imagine she thought she was in danger or hurt because of how loud she was. As for the teasing, I’m sure she’ll be fine.
Maybe if they are 12-13. if my theoretical 16-17 YO is too stupid to keep it quiet or at least wait until I leave the house to do their sexcapades, that's fair game.