I want to discuss about the ending scene because I heard some people do not actually like it or they would prefer otherwise. So, for my two cents:
You must be able to express your sadness and be able to cry together to be a family. You must be able to express your happiness and be able to be happy for one another to be a family.
I really like the concept and the message of the story. That 1% can make all the difference. I don't believe things happen by chance because life is a series of everyone's choices and decisions. If you act upon that 1%, then that is when you move your fate. The possibilities are endless.