This is a very good idea. I have no experience with fractures (though I'm sure I will given Marmalade's clumsiness).just curious, did the vet xray the foot? it just looks "wrong" to me, I have ducks and clumsy ones at that, the last time I had a duck foot look like that, one of the bones was broken. Just a tiny fracture, no displacement or anything but it looked similar to yours.
Just asking as a possibility. Not diagnosing or anything.
Maybe ask your vet about that option?
Thinking back on how bad she was it really is quite amazing that she lived. She has a fighting spirit for sure. I can't believe anyone would let her get so bad....She must have come from one of my neighbors. That, or someone dumped her out here. Some people are not very good people at all.