She's young. Her ivories were big and not worn a bit. There's a good chance that this was her 1st calf.
I found out something. Usually to remove ivories, I'd put my knife blade against them and tap it with a rock. They'd pop right out. I recently bought a replaceable blade knife with the razor sharp blades. I tried that on the ivories and it cut through them like soft butter. It just sliced them right off.