so, implementing my Robx'ness. Picking up the kids last night and she started discussing stuff that wasn't appropriate for them to hear. I should have stated a boundary, but it was right in the heat of it. I said, I would not discuss XXX in front of the children and she kept going. I repeated I wouldn't discuss xxx at this time, but she could call me that evening and I would be happy to discuss. 2 mins later, she starts again. I said I will not discuss this, end of conversation (should have said I am going to leave or just left) but she was shocked to see me say end of conversation and take control of the sitch. She was silent for about 5 seconds in shock and then said "Don't talk to me like that", but the convo was done.

Should I text or say anything to her now to state a boundary of if you do that again in front of the kids, I will just leave or wait for them in the car, or just let it be?