Epizeuxis --Mom

Epizeuxis means the repetition of words with vehemence or emphasis

Mom's style is more one quick "blast" instead of epizeuxis: I never heard her say, "Fiddlesticks, fiddlesticks, fiddlesticks," probably because it becomes funny rather than vehement in repetition.

Thanks for the word and the definition to
http://www.factacular.com/subjects/Interesting_Words