Soup in the SC!! She will be able to freeze it and defrost and maybe blend to make it smooth? We freeze our pumpkin soup (dairy free ) and then defrost it and blend it again to make it smooth again and reheat it gently. I make a huge pot of pumpkin soup or potato soup and freeze kids meals because my kids love soup.

Also if you do spag bol and freeze in meal sizes so all she has to do is make some wholemeal pasta to go with it? You can hide all sorts of veges in it. And she can just put it in some healthy bread for a toasted sandwich if she can't be bothered making the pasta.

Fried rice may be a bit complicated for her.... but if she makes a heap of brown rice or basmati rice (which are both low GI) she can grate veges into a fry pan and add an egg or something, some soy sauce and garlic and the cooked rice and have a healthier meal... We add left over roast chook in ours and some bacon. We also use more spices and stuff, but its easy to make it simply.