Constant squealing and screeching help.

Raelynn
So we started with a new nanny and my LO has learned how to screach from the nannys LO and now she does it non stop ! It's so loud and non stop. Is this something she'll out grow and she's excited she found something new to do? Or should I be worried? It's kind of already driving me crazy. How do I stop this or should I?