Trust me on this…..
Your child knows you are her Mommy + loves you the most!
She also loves her Nanny which is what every parent desires!!
Your Nanny sounds like she is truly worth her weight in pure gold.
A true gem.
Many families would give their right arm to have such a wonderful Nanny for their child.
You may have won the lotto in the Nanny department OP!
I cannot begin to understand why you would even consider firing someone who simply is doing a great job for you.