Your last 2 posts have really made me smile. I think your mom being there is just as therapeutic for her as it is for you and the kids. It is a wonderful wonderful thing. Man, I dream of coming home to a home cooked meal! Let her take over a little, it's good for her, and good for you to relinquish some control.
I have been spending lots of time with friends who are like family. My daughter sleeps at their house like twice a week now! I had a BBQ on Sunday and it was just awesome watching kids from 3 families of all ages have so much fun at my house, running around outside playing hide and seek and tag and old-fashioned games like that and see them generally happy. They all like their electronic devices but they didn't touch one while they are over. That is what makes me happy. I am jus sitting back and enjoying it, trying not to worry about anything else.
Sounds like you are going to have one great summer!