Of course I was talking about His immediate followers....and, by the way, since we have no real date of her death, it could have been within months of His crucifixion....who knows???
No, we don't know the date of her death. If she was sinless, she never would have died. Instead, like all of us will, she died, and was buried somewhere, and her body, like all of ours will, decayed into nothing but a skeleton.
I would say the chances are, all her kids, who were born to Mary and Joseph after the birth of Jesus, probably took care of her burial. I don't know for sure, because the Bible doesn't say, and I NEVER go beyond what is written. No one should, so if you do, then you should stop.