My DH is much older than your DD and doesn't eat salad so we have cooked veg every night & DS1 never got a taste for salad, DS2 on the other hand I've been giving him lettuce, cucumber & tomato since he's been on solids (and he loves tomato, not too fussed on other salad veg yet) I'd suggest cooking some veg for her & giving a bit of salad, one day she may eat it.

If she won't eat steak, maybe boil an egg or give her a slice of cheese to add a bit of substance.