What happened to Kushina's body?!

[ismael]

it might be burried in the graveyards or maybe she got sealed in naruto's body so he could appear when naruto would try to control the kyuubi.

[נıм]

You may be right... but what confuses me is that in the earlier battle between the Third and Oro, where Oro summoned two coffins, and attempted a third coffin, why did Hiruzen says that he needs to stop the third from coming out if he knew that Minato cannot be summoned because of his being sealed by the Reaper? The Third witnessed the whole thing...

Dunno, maybe he forgot or did it to be save, dat Minato won't be summoned, cuz Orochimaru is a genius and maybe he found a way, or plot.

[Champ]

She not allowed to get buried? Obito used Chakra chains cause of the Rinnegan