First Lora, I barely know what I'm doing. Moon Mom XL!

It's pure rng to generate her prosthetic leg correctly, you can try increasing the weight of (prosthetic leg) or (cybernetic leg) but you would probably have a better time inpainting it.

Main Tags:

della duck, duck, beak, bird, white skin, white body, long hair, white hair, prosthetic leg, cybernetic leg, orange legs, webbed feet

Reinforcement SFW Tags:

bomber jacket, flight helmet, goggles on head, brown shorts, hairband, 
devil costume, fake horns, red shorts, red sweater