Wow! I've never seen nails get like that. I can only imagine how they were hiding under those feathered feet. I wonder if perhaps hers grow at an abnormally high rate. In horses and donkeys, abnormally rapid hoof growth is usually a metabolic or thyroid problem. I wonder if perhaps she has a metabolic disorder? Whether it is a reluctance to walk around or a metabolic disorder, it looks like she's going to need regular trimming.
I don't envy you.