Are you God?
Having said that, it is possible that at least some of the Medjugorje apparitions - if anything supernatural occurred there at all - are not from God.
Approved apparitions are another matter.
Steve, you’ve missed the latest advances in theology. It has to do with the “Tethering doctrine”. Saints are alive in Heaven, but cannot move outside of the heavenly boundaries.
Spiritual bungee cords.