Pure speculation and conjecture. Not a scrap of reliable evidence to support that.
Mary died alone? No. Women were never left to live alone in those days. Jesus gave John the privilege of looking after His mother.
And you know for sure that all the apostles were there with her?
How do you know who was there with her?
LOL LOL SO THEN IT MUST BE TRUE ...LOL Women could not die alone so ALL 12 APOSTLES must have been there... typical tradition made up out of the whole cloth of silence