Zoey and Solara: Prosthetic?

I wasn't really sure which design I liked best for Zoey's new leg, so I figured I'd see what you guys think!

The first is kind of more traditional and has a knee joint.
The second is basically a crutch that's attached to what's left of her leg.
And the last is, of course, absolutely nothing. XD

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This was made in Kisekae 2. I take no credit for the art itself, just their designs.