Expressing herself freely

It was the final wallop. Until this moment, Aunt Dahlia had been able to preserve her frozen calm. The dam now burst. The years rolled away from her, and she was once more the Dahlia Wooster of the old yoicks-and-tantivy days - the emotional free-speaking girl who had so often risen in her stirrups to yell derogatory personalities at people who were heading hounds.

(from Right Ho, Jeeves)