Mary is alive in heaven. Theres your problem, correct? You have no belief?
This is not to say I disagree with you but it would depend on how we see a lot of other things.
In reading some of the Early Church Fathers who knew the Apostles and got first hand knowledge from them face to face — Holy Tradition — you will find out the truth about Mary being carried to heaven body and soul.
It happened with Elijah and Enoch, so why can’t it be a possibility with Mary?