I heard our lady died of love from one of the mystics. Not of grief but what about Jesus? Broken Heart syndrome is a real medical thing. Our lady feel asleep she died of love and her son took her.
Jesus surely died for love of all God's children and physically lost all his blood to the end. The sword brought forth the remaining blood and water from his side. What love our Lord showed for us.
I think that medical tests that they have done on Eucharistic Miracles have shown that the heart tissue obtained from them went through cardiac arrest...