The one fragment that gets stolen in the jaguar story gets return automatically once you completed it. So you should already have it back.
If you missing one it might be another. Maybe the one in the extra part of the desert? You also can find a hint where all worrld fragments are and which ones you are missing in the forest of beginnings.
Dont know it out of my head but will look it up once I am back on my pc and write a reply.
The game can be completed with a minimum 10 forms. You dont need most of them for reaching the end. Seem like you got pretty much all!
