What is she training for? in? That could make a difference.
After school, sandwich, fruit, egg muffins, omelet, toast, toastie, sausages, cook and let go cold, wraps, hummus and pita bread.
\Do you have a slow cooker? I have a small one that does two portions. I make this quite often.
2 x chicken fillets or 4 thighs - skinned and cubed.
A few slices of leek, a few sliced onion, add a tin of condensed mushroom soup and a pot of creme fresh.
You can add more veg and serve with rice or potatoes. Eat one portion then put the other in a pie tin, add a pastry lid and freeze for another day.
When you are making a family meal cook a portion for the freezer, it can be defrosted during the day and then microwaved, I currently have a chicken dinner in the freezer.
Curry - in a slow cooker or cook and freeze in single portions.
Soup, again in the sc with a chunk of nice bread.
Rice (in a pan or rice cooker) with cocoanut milk, tinned pulses, chopped veg and nuts.
CHicken tikka kebab with salad and flat bread with raita.
If you are cooking for the family serve up a portion and leave to be microwaved later.
Tray bake, salmon, chicken or veg.