They both cried

I have a friend who has two sons. She left him to grandmom in China when her first son was 2 years old and brougth him to US when he was 6 years old. Now her first son is 12 and second one is 6. All this years, she think everything is fine except that her first one is not as sweet as her second one. Last year she went to back China to visit grandmom. A very shocked thing happened. Her 12 year old son and grandmom both cried when they see each other. They didn't hug and just stand there cried quietly. Till then my friend realize that she has had lost something forever, someting she can never find it back.