this might be a bit old for her, but maybe worth a try? my 7 year old has been seeing a counselor for a few months now for school-caused misery superimposed on a major drama personality (loved Kurcinka myself!) She's teaching him cognitive therapy principles outright, and taught him recently about catastrophizing. Now that he knows it's a mental error, he doesn't want to do it and we can quiet fits quite often by just asking if he's catastrophizing.
My 3 yo, though, isn't old enough to have that help. With him, it's more about trying to avoid his triggers and give him space and language for it all. Some kids are just difficult to ease into the world! I wish I were doing a better job with my middle kid. I can avoid triggers, but I'm not doing very well at teaching him (and his dad) to smooth the volcanic emotions. With him, for what it's worth, his pride often gets caught up in it. If I can interpret him to him as having a reasonable feeling, then we can discuss what will actually happen. But if you act angry, frustrated, in any way add energy to the system, he blows. And once he blows, it takes a while to come down. 15 minutes sounds to me like she's doing very well, honestly. Hard for parents, of course, but doing well and going to be fine. A few months ago, my 7yo sulked at a party for a full half hour b/c he was convinced someone pushed him on purpose. He missed a quarter of the party refusing to join in!
