^-o Here is a better visual aid.
Blue: Homura’s original wish and all the different realities that link together to give god madoka power.
pink: Madoka’s wish that is powered by Homura’s wish (her wish can’t exist outside the circle).
Black: Homura eats herself (ouroboros). How can you universe take her when the wish is contradicted by a wish within the wish? how was universe meant to get the power of a wish within a wish?