keep the food simple so you dont get frustrated at her not eating what you've spent ages cooking.
try just some steamed veg (steamed to quite soft at first).
then take a deep breath and try the following..
as you are finishing off making the food, start talking to her... telling her a story about teddy bears or something. take the food over, keep talking to her making eye contact, lots of suspense... "you'll never guess what happened then...", pop the food in her mouth, keep talking. keep doing this, make her laugh if you can, lots of drama.
Idea is that she doesnt have time to think about what she's eating but will automatically open and close her mouth and eat (make sure the story is a good one though!).
Afterwards or when she starts refusing, just say, "havent you done well eating lots of dinner..", take the food away and get on with the next thing.
Even if she only takes one mouthful at first keep doing it. If she refuses straight off, keep sitting there telling the story and try again a minute or so later.
Or.. you could try offering her a choice of two things, like a piece of brocolli or a piece of carrot and let her grab whichever one she wants to eat.
Hope that helps. Sorry that went on a bit didnt it?!!!