This image just reminded me of this theory that I’ve had for Homura ever since I watched Rebellion. Chances are that my Theory is full of shit and I don’t know what I’m talking about. But what the hell, here goes.
My theory is that all of the despair that Homura has been feeling ever since she made her wish in the first timeline has been building up more and more. And that all of those Negative emotions that accumulated created a clone of Homura that’s basically the embodiment of all of the feelings that she's had for Madoka. And I think that that clone of Homura is the one that suppressed Madokami’s powers and creates the new world where Madoka and her friends live a normal life. And that Devil Homura’s new Soul-gem is just a new isolation field thats keeping the regular Homura captive.
Just a random thought that came over me after watching Rebellion a few times.