Homura could not defeat walpurgisnight but she was able to seperate

>How was she able to do that?

Because Rebellion is fanservice garbage.

>>153730544
This. I was never able to understand why everyone loved it so much, I almost fell asleep during it. I found it extremely underwhelming.

>>153730239
>>153730637
>>153730544
>samefag

>>153730239

This is explained visually in Rebellion. There is a spool of pink thread that the children kick off screen calling "Fort!" meaning "Hidden!"

The spool represents Madoka's Goddess abilities. Thus, her goddess abilities were hidden in Homura and Madoka had forgotten about them. Later, when Madoka comes down to save Homura she enters through a window. The window shuts behind Madoka, meaning that The Goddess powers are locked inside Homura. The next we see goddess Madoka she is coming down from Vaginalhala to take Homura away, still connected by the 'thread' of her powers, but unaware that Homura has it and has sealed it away inside of herself. When she grabs Madoka's hand she uses her control over Madoka's powers to infinitely corrupt her soul gem while still keeping it in one piece, and to go all the way she rips Madoka's powers from her, and seals it (The pink thread) into her crown jewel. She ripped down god, and so became a demon. But what world did this demon make? Everyone is alive and well, it is implied that magical girls will not die when they expire as shown by Nagisa being unharmed and unwitched in the end. Incubators are punished for exploiting the lives of humans. Madoka is freed from her fate of being enslaved to the law of the cycles. Homura creates a better world. But she did so as an act of rebellion. A just god must punish rebellion. Thus, Madoka will be her enemy once more if she ever gets close enough to take her powers back from Homura. That is why Homura is punished with loneliness at the end of the film.