If she was just having kibble, JWB's recommendation would be around 225g per day, so if Delta is maintaining her weight, and growing a bit, then it would sound like the right sort of amount for her.
http://www.wellbeloved.com/products/dog_food/feeding_guidelines.aspx#standard_puppyIf you dropped her down to two meals, you'd still need to be giving the same amount, just divided into two not three. It just depends on whether that might be too much for her. You could always start by giving her a little more for her first and third meals, and cut down the amount of the lunchtime one, to see how she does.
Just to mention the pig's ear, my vet advises against these, for all dogs really but especially for pups. In pups, the pieces could cause choking or an intestinal blockage, and they're also very fatty (risk of pancreatitis). It's up to you of course, but I just thought I'd mention it in case you weren't aware.