I mean when Jesus went to heaven, there was a lot of dispute over what really happened to him. People were wondering, Was he really crucified or nah ? We know Mary went on to live on for like another 10 or 11 year after he was gone. I'm sure people(Jesus followers) went over to her to find out what really happened to clarify the situation. Little we know is what did Mary do after Jesus.
The Quran verse below is clear on how Jesus was saved by God and was raised up to God,
And for boasting, “We killed the Messiah, Jesus, son of Mary, the messenger of Allah.” But they neither killed nor crucified him—it was only made to appear so.1 Even those who argue for this ˹crucifixion˺ are in doubt. They have no knowledge whatsoever—only making assumptions. They certainly did not kill him. Rather, Allah raised him up to Himself. And Allah is Almighty, All-Wise.
As such, there is no need for clarification of what happened to Jesus after his departure to heaven, for he is with God in heaven, and that is all we have to know. Jesus will indeed be upon a sign for knowledge of the Hour,
And indeed, he [i.e., Jesus] will be [a sign for] knowledge of the Hour, so be not in doubt of it, and follow Me. This is a straight path.
As for Mary, we do not need to know about what Mary did after Jesus, only that she was a devoted person to God and that God has chosen her, purified her, and chosen her above the women of the worlds,
And (mention) when the angels said, ‘O Mary, indeed God has chosen you, purified you, and chosen you above the women of the worlds.’ ‘O Mary, be devoutly obedient to your Lord and prostrate and bow down along those who bow down (in prayer).’ That is from the news of the unseen which We reveal to you, [O Muhammad]. And you were not with them when they cast their pens as to which of them should be responsible for Mary. Nor were you with them when they disputed.”