Pregnancy hormones or am I just a bit*h?

My husbands grandma lives with my husband and I. She lives with us because she can't afford to rent a place by herself. But any who, I've been craving mac an cheese with hamburger meat mixed with it. I checked with both her and my husband to make sure they were okay with having that, both said yes. I started to cook the meat and put the noodles on a boil, I had to use the bathroom and about the 3 minutes I was gone she had mixed raisins and sour cream with my hamburger meat. I'm honestly kinda mad about this, and she told me that she's going to make dinner and what I had planed sounded horrible and that her grandson my husband wouldn't dare eat what I was going to make. Am I just over reacting or what?