what happens when a feeling gets a name
A study at UCLA put adults in a brain scanner and showed them distressing images. When they were asked to put a simple word to the feeling in the image — just the word, nothing more — the brain's alarm region, the amygdala, quietened, more than it did during other tasks. The naming itself seemed to do the settling.
Calibration, honestly given. This was one study, in adults, in a laboratory; a nine-year-old at a dinner table is none of those things. Later work has broadly supported the idea, but the effect is a nudge, not a switch.
Still, it agrees with something grandmothers have known without a scanner — a named feeling is a carried feeling. "You're disappointed, no?" costs nothing, takes two seconds, and gives the storm a handle. That, more or less, is the entire intervention.
Lieberman, M. D., Eisenberger, N. I., Crockett, M. J., Tom, S. M., Pfeifer, J. H., & Way, B. M. (2007). Putting feelings into words: affect labeling disrupts amygdala activity in response to affective stimuli. Psychological Science, 18(5), 421–428. doi:10.1111/j.1467-9280.2007.01916.x