Idk. I’m guessing because she was a bit emotionally unstable at that point like Jeremiah just pulling out her chair was enough to make her start crying. But I remember Cierra saying how she was scared for Iris, how the girls followed behind her when she went to talk to Iris because they didn’t want to leave them alone, how I think Pepe and Jalen also didn’t want to leave them alone together and even Iris said she was uncomfortable with her.
Right and we’ve seen her switch from crying to yelling at Jeremiah so imagine what would have happened if she switched from having a peaceful conversation with Iris to yelling at her and potentially attacking her because she said something she didn’t like. I’d much rather there be a audience every time they were together.