Can you tell me why she started to cry and not say anything while walking away when I told her this?

The Journey will be difficult and the road will be long. I face this challenge---I face this challenge with profound uncertainty and knowledge of my owns limitations. But I also face with limitless faith in the capacity of you. Because if we are willing to work for it, and fight for it and believe it, then I am absolutely certain that generations from now we'll be able to look back and tell your children that this was the moment, this was time, when we came together, to strengthen our great relationship, so that it may always reflect our very best selves and our highest ideals.