How Rin died!

[apple pie of doom]

Who's to say.
He might have used genjutsu on tobi to make it seem like Kakashi killed her for all we know.
Madara is sort of the most powerfull being in existence.
Pretty sure he could pull that off.

 

[Sydd]

Kakashi does accept the blame for Rin's death. I don't remember where, but he says that he was unable to protect any of his comrades. Minato, Obito or Rin.


And no, I don't agree with your theory.

 

[Ōkami]

It was recently revealed that Obito has a separate grave. So he was not visiting Obito in the memorial, only Rin.

Obito's name is on the memorial so explain that