I blame Delores
Hear me out. I know these ladies are all nutty and don't really need a trigger but if you look at what caused this particular issue it started with Delores.
Jaqueline was ashamed or upset about what happened with Robin and had decided to go home with Chris. Delores and Siggy came in and didn't want to hear that, decided Robin was the problem and decided to ask Melissa to ask Robin to leave.
THEN Delores went to Melissa and said that Jaq said it was either her or Robin. That really made it seem like Jaq demanded Robin go home which was not the case. So I can see where Theresa would find that obnoxious and rude.
Jaq went to the table not expecting to be accused of forcing Robin to leave....Triggered.