I would take cereal and a small bottle of milk each day if she will eat that. Most cereals are filled with minerals and vitamins that kids need. Plus they usually have complex carbohydrates in them like grains.
She can eat that every day for breakfast if she will. We are allowed to have cereal for breakfast in child care where the regulations are very strict about nutrition. I used to think cereal was a filler, a waste of time, but they have evolved into pretty healthy foods.
You can cook eggs in the microwave, we do that often with my grandson. You use a microwave safe bowl, glass is better but we also use some we bought at Walmart. They do need to be replaced occasionally if you do not use glass. As soon as the eggs are done I run water in the bowl and let it soak. Then they wash very easily.
You can do other foods for breakfast too. How often do families have breakfast for dinner, you can have left overs or other foods for breakfast too.
I hope you find some yummy things for her to eat. Good luck!!