Just out of curiosity why aren't you publishing your shop instead of exporting it and publishing it manually? You lose a bit of functionality when you do it that way such as inventory management. Try publishing it to your domain to a /shop directory and that should help your shop be more functional.
As for the links either I'm totally not understanding what you want here or you are complicating the heck out of creating a link on a site menu and locations on your current website pages. It's all just links, and you would link directly to the index.php file in the location you have published your shop.
So if you publish your shop to:
http://www.wobblynonprofit.com/shop
Then you would link to:
http://www.wobblynonprofit.com/index.php
It all depends on the location you are publishing your shop to (or uploading it to manually if you insist on doing it that way).
If I'm totally misunderstanding what you want here please let me know that too