Welcome To BYC
This thread is from 2015, so likely you will not get any replies from the Original Poster.
Can you please post some photos of your hen, the wound and tell us how you've been treating it? Was the puncture stitched up and has since reopened? If stitched, did you stitch the crop, then the skin separately or together?
How is the overall demeanor of your hen is she dehydrated and weak or still hanging in there?
Since there is a foul stench, you are likely dealing with infection. Is vet care an option for you?
Please try to give as much information as you can so we can try to give you some suggestions. I'll tag in
@azygous