<human>: Give me the gist of the text in a nutshell

I am a nanny. I recently accuired a fantastic job caring for two wonderful kids. Their mother is a workaholic who is very stern and has no idea how children act, or how to handle it.
Today the son (8) told me that his mother said I was immature.

First of all, I am independant and pay for everything that I have. I am immature with the kids, but I'm simply not afraid to get down on the floor and play legos with them. That doesnt seem "immature" to me. I also noticed a strength the children have and that is their creativity on the game, Minecraft .I have broadened their horizons and have showed them games on my xbox like Skyrim and Oblivion. I bring my xbox on fridays to let the kids play. Could this also be considered immature?

My feelings are hurt, should I confront it? Write her an email asking what I did that implied I was immature and not a "grownup"? 

Any opinions are welcome!
<bot>: the kid I nanny, told me his mom called me immature and not a "grown up" Do I confront it?