Oh yes, she is dead and has been for a very long time. The Bble says all have sinned and did not include, “except for Mary.”.
trying my hardest to think of those sins commited by Jesus, but none come to mind...and remember He was ALL MAN as well as ALL GOD...not 50-50.....but I don't think that His human nature sinned.....there was, however, that time that he was angered and threw the money changers out of the temple....or that time that He stayed in Jerusalem preaching to the crowd and both Mary and Joseph were worried and had to return to search Him out..(Honor thy Father and thy Mother)....probably situations to be forgotten.....