Homura challengs Walpurgisnacht alone and gets seriously wounded.
Her action was making Madoka suffer even more, and she becomes despondent, and as a result, her Soul Gem starts to turn black.
Madoka appears in front of Homura with determination -- and she declares to Homura, "I found my wish."
Now she knows everything about the magical girl's destiny.
What wish does she have, what decision is she going to make?