Quote Originally Posted by WellGramarye View Post
By sundering herself, she is thus on all 14 versions to watch over him, but she only needs to bind him on the source.
If she did not sunder herself, then there are no Warriors of Light possible on the reflections.
As I wrote in my previous post, it seems that she sits in the centre of all the worlds, able to reach into any one of them and communicate with her chosen Warriors of Light in each one.

Independent Hydaelyns on each world would be narratively weird and the concept has never been raised, even when we were in the First.