So there's verification that her ear was normal at one time and it's not a birth deformation? do you know enough of her history to know when it might have started? Before rescue or after? I know that's all secondary to her being ok, but as long as it's presented like a curious anomoly we'd be dismissive not to wonder eh?
So foremost - love & prayers, Azzie. and to you too Chelle. Hope she's not been feeling any pain from this. First Luck is already taken care of, she's in a safe supportive place. 2nd luck, she's seen a vet. 3rd luck she gets treatment, and 4th she's fixed up. I think this stage is fair to buy a lottery ticket in the lucky girl's name.
Actually, I suggest everyone buys a ticket with whatever numbers you can come up with for her. If you win you're gonna feel SO good paying for her surgery!
Extend your luck to your cheering section if you can Azzie. Scrtches, baby girl.