Don't let the one family dictate what you do in your own daycare. Do what works for you and if the mom is not happy she will give notice and you can fill the spot with a family that doesn't care as long as you are within ratios. I wouldn't tell the mom anything or bring it up just let her handle it in her own way. Chances are she will be concerned and make a few comments but then wait and see how it all plays out before making any decisions. But you don't want to start your daycare catering to the first family in for the duration of their time with you. Just do what feels right to you.