My ds is abit older than your dd but he will eat homemade cabbage salad (coleslaw), beetroot, pineapple rings, cold peas and corn. Bean salads are a good one as they have the protein from the bean. You could also try couscous salad or pasta salad with pasta, ham, corn, capsicum, olives and dressing or even put tuna in it if she likes fish. She may come around with the steak, when ds was 14 months he wasnt into it either but now he loves it. She might like a softer meat like sausages or homemade rissoles on the bbq.

If you find something you all love it certainly makes it easier doesnt it