Hazlinh I feel like I want to come over there and cook something for your dd! 
but in the absence of that, here are a few ideas:
Cream of mushroom soup (I don?t cook this because I try to avoid cream, but this is what I would do):
Punnet of mushrooms, wiped and chopped
Small white onion, finely chopped
Small leak or stick of celery, finely chopped
Garlic clove, peeled.
Herbs ? I?d use a little fresh thyme leaves I think.
Vegetable or chicken stock (probably quite weak so that it?s not too strongly flavoured or salty).
I would fry the vegetables in a little olive oil until nicely soft. Remove the garlic clove at this point, add the thyme leaves then cover with the stock (I would be inclined to keep the stock on the lower side on the basis that a) mushrooms are watery and b) you want to be able to add a generous amount of cream at the end) and simmer for about 15 minutes. Use a hand blender to whiz it up then stir in a generous amount of cream.
Easy but delicious Butternut soup
This soup is my standby and everyone loves it.
1 butternut, roughly chopped and pealed (leaving a bit of the skin on won?t cause in any harm but do peel at least some as the skin makes the soup heavier).
1 medium onion, chopped
1 large carrot, chopped
½ yellow/red pepper, chopped
1 small leak, chopped
Dried rosemary
Cinnamon
Chicken/vegetable stock
Milk
Honey/lemon
Fry the onion, carrot, pepper and leak in some olive oil until softened. Add the butternut and stir as well as the rosemary (if making for adults, I also add chilli but I doubt that?s what she feels like). Cover with the stock. You want the stock to easily cover all the vegetables by a few centimetres. Simmer for about 25 minutes, until your butternut is all soft.
Allow to cool for a few minutes (just so that you don?t get burnt if any splashes happen while you?re blending) then use a hand blender to whiz it all up. Add milk (you could add half milk/half cream if you want to beef up the calories) to the consistency you want.
now the very important part : Add a good drizzle of honey (is she allowed honey?), a few squirts of lemon juice, and a good slug of cinnamon. Stir and taste. You will probably now need to add some salt. Taste again. If it seems a bit bland, toss more honey, cinnamon and lemon in. Stir, and serve.
When you say she can?t eat yoghurt, can she have yoghurt in food and heated up? If so, I will post my spinach and pea recipe which is absolutely delicious, packed with goodness and very very easy to make with all ingredients from the freezer except the yoghurt.