Give he a bit of sympathy.

My great-nephew can recite an astounding number of them.

.. give her a double serving of double chocolate cake, with double chocolate frosting, plus micro tiny chocolate chip morsels and a tall cold glass of chocolate milk..

That ought to keep her quiet for awhile.

It will keep her mind off of pie and get her to think and talk about cake.

yep, only impressive if she can tell you the last digit.

No matter where you go, there you are.

There's always some point in the series beyond which it doesn't matter.

NASA uses 3.141592653589793

That's good enough for navigation within our solar system.

https://www.jpl.nasa.gov/edu/news/how-many-decimals-of-pi-do-we-really-need/

3.14 is good enough for common carpentry.

3 is good enough for pizza and bronze age storytellers.