Notdonna the current meal plan sounds pretty low on calories tbh, if your dd has a small appetite every mouthful has to be really calorie laden. The only way to do that imo is to book everything in butter, lard and cream.
When I was getting dds weight up she had;
B. Large bowl of porridge made with double cream
S. Piece of cake/flapjack (ideally home made with plenty of butter) or croissants or pain au chocolate.
L. Scrambled eggs made with butter and double cream, two slices of thick bread, would also have a chocolate bar or more cake. Other lunches included home made soup (with double cream) with two slices of bread, tuna Mayo baguette with crisps.
S. Cereal bar
D. High calorie meals such as cheesy pasta bake, fish pie (white sauce made with double cream and butter) roast dinner with large Yorkshires, veggie burger with cheese/Mayo and chips.
S. We counted pudding as evening snack, this would be things like sponge pudding and custard, tiramisu, trifle, large portion of chocolate, cheesecake.
Dd also had a couple drinks such as milk and a smoothie throughout the day.
You have to totally reframe your thinking of what constitutes a healthy diet, for your dd a healthy diet is biscuits, crisps, cake, chocolate, chips etc as these are all a decent calorie amount. You can worry about addressing the balance and getting five a day in once she is weight restored.
The dr definitely doesn't know what they're talking about, under 80% wfh is usually strict bedrest and wheelchair use only.