That would seriously piss me off so much. I would be so triggered that I would shut down. I think u were really brave to continue your session. that sounds so tough! My ts phone has gone off before, but she either ignores it or gets up to turn it off... And even that is so triggering. So I can't imagine having to go back out into the waiting area

When u went back in and told her how it triggered u, what did she say? Was she apologetic? Because its one thing to state the fact that she is on crisis duty and offer to help u work through whatever it caused. It's another to be on duty, not tell u, and then dismiss your worries.