Aimees mum, just typed a long message for you and my machine crashed, how annoying! Anyway, my ds is nearly 5 and has been veggie all his life.
Iron is in: dried peaches, egg yolks, nuts (but your dd is too young), asparagus, oatmeal, blackstrap molasses (which I think is vile), parsley, figs, cherries, bananas, avocados, brown rice, potatoes, green peas, prunes, sunflower seeds, raisins, mushrooms, kale, brocolli. You need vit c for optimum iron absorption so try to give any of the above with something rich in vit c.
Other ones to watch for in a veggie diet are B6 and B12. B6 is in wheatgerm, bran, cantaloupes, cabbages, milk, b. molasses, egg yolks, kale, leeks (quite sweet, might be good) and B12 is in eggs milk and cheese.
Just taken this from Suzanne Olivers' "What should I feed my baby" which is ok but not veggie. My ds eats eggs and nuts and brocolli so I don't worry about these vits too much. Recommend carol timperleys veggie baby book, will see if I can find a link for you. HTH.