Quavo hurt her ankle, saweetie was likely also crying from the pain hence the limp plus she was hyper ventilating and crying on the floor.

I'm really glad he didn't knock her out in response except for the rough take down but whew what a toxic relationship.

Why didn't he help her or check on her?? She was literally breaking down on the floor and yelling in pain but instead he was checking for cameras??
Did he want to yell at her, rough her up, DO MORE?? Cameras may have stopped his fury.