Food confusion

Tonight she asked me about every 15 minutes if we were going to the grocery store. Each time I calmly replied that tomorrow is Super Bowl Sunday--the grocery store will be a mob scene and the salty snack aisle would be stripped bare. So we would go grocery shopping soon, but not today. There came a point where I reached my limit and said, "I cannot answer this question again. No, we are not going to the grocery store tonight!" 

She went back downstairs and came back about 10 minutes later and said, "We have that frozen casserole that Annie made..." I looked at her and searched for what to say. Before I could say anything, she spread her arms wide and said, "I don't know what you're asking me to do..." I walked over to her and said, "There's much confusion here. I'm not asking you to do anything. We ate lunch at 4 o'clock. I'm not even thinking about food." 

She said she would just try to find something for herself. I followed her downstairs and pulled a pizza out of the freezer and asked her if she could eat that. She said yes, so I helped her put it in the oven and set the temperature. I came back a few minutes later to make sure the pizza wasn't burning. She asked, "Do you want rice with that?" 

Again I didn't know how to answer. I wondered if she had put something else in the oven. "Do I want rice with my pizza?" is all I could think of to say. She just turned away from me and put the rice back on the shelf.