Author of Nanige couldn't decide who she actually is and at some point passed a line where she could be just regular human. I assume here is the same story.
him going up to the window, except she's not there... and never has been. The building has been unoccupied for years. Except there's a shrine to a goddess...
Most people don’t seem to know the canon backstory. Madoka inherited billions of dollars and spends all her time constructing rooms in an elaborate housing complex. She also doesn’t change rooms daily, she doesn’t see oda-kun every day either