She can rebuild her prosthetic, though it may not be as she remembers it.
As a general rule, special weapons can be built within the limits of materials and technology found on Vaikuntha. Seeing how Vaikuntha doesn't have the appropriate facilities and specific technologies to build what characters need, it would be custom made and use replacement parts found on this world. As such, the final product would be different and more rudimentary (unless they manage to get enough money to access facilities in Von Oktavia and do a finer job on it). However, characters cannot use their special tool as well as they normally would, if at all, and may require a Custom Job to regain full control over their creation. Any magical functions cannot be replicated.
Note that this is only for technological tools and special weapons. More common weapons such as swords and the likes can be replicated with far more ease.
no subject
As a general rule, special weapons can be built within the limits of materials and technology found on Vaikuntha. Seeing how Vaikuntha doesn't have the appropriate facilities and specific technologies to build what characters need, it would be custom made and use replacement parts found on this world. As such, the final product would be different and more rudimentary (unless they manage to get enough money to access facilities in Von Oktavia and do a finer job on it). However, characters cannot use their special tool as well as they normally would, if at all, and may require a Custom Job to regain full control over their creation. Any magical functions cannot be replicated.
Note that this is only for technological tools and special weapons. More common weapons such as swords and the likes can be replicated with far more ease.