You might want to revise her breakfast. Apricot wheat are 1/5th sugar . There are 6 forms of sugar listed in the ingredients!
(Wholegrain Cereals (69%) [Wheat (63%), Rolled Oats (6%)], Raw Sugar, Concentrated Apricot Puree (4.5%)], Invert Sugar, Humectant (Glycerol), Honey (1%), Sugar, Minerals (Calcium, Iron), Wheat Fibre, Salt, Gelling Agent (Pectin), Flavours, Barley Malt Extract, Acid (Citric), Colour (Paprika), Vitamins (Niacin, Thiamin, Riboflavin, Folate).
Maybe some overnight oats with blueberries.
It is not her fault. Everyone is being tricked into the ultra-processed healthy food claim .
Don't even get me started on the pot noodle.
Good on you for making changes from today. Don't fall into the opposite extreme as everyone will crash quickly. She shouldn't go hungry, so make huge salads, with crumbled eggs, sautéd chicken breast as toppings, even smocked salmon. Yummy food that leaves her satisfied.