Milk to drink whenever she likes.
Avoid things like branflakes, oatcakes.
Think about texture and colour. We eat with our eyes. Make it playful - make a face out of things on a plate. Bits of veg, bread sticks (if making at home, try using a cheese straw recipe but miss out the cheese - though make cheese straws as well, never know what she may like).
Avoid mixing things together, little pots from which they can help themselves. Some children hate having things mixed.
Try things like:
Cheese in cubes
Scrambled egg
Cucumber with the skin cut off, sliced thin.
Raw carrot battons
Cooked carrot battons. (Some children will eat veg cooked, others prefer it uncooked)
Peas
Toast with butter, Toast without butter - see which she prefers.
Pieces of cold cooked meat
Fish fingers cut into chunks
Fruit
Custard - try it warm, cold.
Don't put too much choice out, don't put too much quantity. If she eats all, you can always make more. How much she eats will vary.
Get her hand and make a fist, that is the size of her stomach, so use that as a guide to the quantity of food.