For a start do you eat lots of veg yourself?
Let her choose it from the greengrocers, let her pick it up and touch and smell it in the shop, then help you wash and chop and cook it at home.
Try growing some yourself - maybe wrong time of year now. You could go to pick your own place and pick sweetcorn - ask them at the farm as they usually pick corn themselves but will let children do it if you ask.
Try really sweet and tasty raw veg such as small new carrots, baby corn, cherry toms etc. Arranged on a plate they look pretty and appetising. Try a dip she likes with them - mayonnaise, sour cream , 1000 island, hummus?
You could hide veg in a soup, pasta sauce, pizza sauce, etc. Some children will eat veg blended in foods.
Any good, do you think? you may have tried all these already...