I think it has something to do with Madoka appearing right before Homura's Soul Gem turned completely black at the end of episode 11. If this is supposed to be after the series has ended, maybe she's trying to get Madoka back? Despite all that, I wouldn't be sure until it's at least fully translated.
I'd say is more related to how Kami-Madoka appears before the magical girls who're about to turn into witches, to cleanse their soul gem and possibly take them to heaven or wherever she took Sayaka to. Homura just wants Madoka to pick her up
Although Homura in the 3rd frame looks like she's waiting to die (in an suicide attempt)...
We'll always be together!
So you shouldn't pull something sneaky like that♪I want to see you... Madoka...Madoka...PAINT THINNERSomeday, We'll Meet Again - Until That Day...Oh!Shiny Shiny--Ah... Homura-chan?! But I didn't feel her Soul Gem being corrupted this far...Yeah...I'm doing my best, Madoka......