Sorry for the delay in not getting back to y'all sooner.
Thank you all for the responses. As one poster said, one would think it would have been easier to cook a big plate of scrambled eggs instead of making over easy eggs for 9 people. I believe it was to show her skill and control. I had forgotten about how she had used to boast about being a short order cook years before when her 1st husband had a restaurant for a short time. As other's mentioned, I could have declined the eggs. It was a situation, darned if I do and darned if I don't.
ExMil tends to be more the SS and would have grandiose ideas and plans.
1. Years ago, she and her husband stopped by while we were making lunch. (they had lived 5 mins away). I had offered her a sandwich (coldcuts & cheese). She asked if the cheese was Boar's Head (TM), I had said no, it is store brand (Publix). Her comment -- "Don't bother, I only eat BH brand"
Yup!! That is what she said!!
2. There was a gathering at my house. MIL used the bathroom. She decided to "mask" the odor, by spraying alot of my expensive perfume. My bathroom and rest of the house smelled like a house of the ill repute for several days.
Oh.. the stories I could tell LOL. Anyways.. thank you. I feel better now knowing that I wasn't rude for asking, though it wasn't rude of her to decline, but OTT for her comments.
ETA: "Marie" has mellowed out the last few years, mostly due to her and her husband's health. I think also, she realized some of the hurt that her son caused to my son.