That is NOT speculative at all. Firstly if that is what Christ told Mary then that is exactly what happened. Secondly He took His blood to the heavenly Sanctuary immediately after His resurrection. You will find that in Hebrews. Thirdly He took all the OT saints from Sheol/Hades to Heaven. You will find that in Ephesians. It is obvious that you have not studied this matter.The Bible doesn't say that Jesus ascended after telling Mary Magdalene not to touch Him and came back down. That's a rather speculative interpretation. I don't see it in commentaries from those who knew Greek, either.