B.P.
M., My heart is with you! I too have had the same issue with my MIL. One part of me says it is once a week and let her spoil what should be the brightest spot of her week...brunch with her children and grandson. However, I do agree with you that it isn't always about the food. I finally had to make my husband understand (I was as calm and businesslike as I could be) that it was about respect and that our sons had to know that I was the decision maker. He spoke to his mother and she didn't acknowledge my presence for 2 months! However, when that was over, she now has more respect for my rules. But when they are at Grandma's house, she is allowed to spoil them...I can't take that from her.