Is God bound by the laws of time?
No, but humans are. And Mary is human; always was and always will be. She was the loving wife of her husband Joseph, bearing many children to him after her FIRST born. She was humble enough to know she was in need of a Savior, being a sinner in the present. She died, like all the saints, and is in the presence of the Lord spiritually, awaiting the resurrection of her body in due time, like all the other saints.