My granddaughter is in preschool now.  But this morning she didn't want to go to school for unknown reason, and whined that she just don't want to go.  Being at her wits' end, my daughter finally coaxed the little angel into believing that her Gong-gong and Po-po will come over to pick her up after school.  My granddaughter seemed satisfied and stopped whining.

Then my daugher told us the story over the phone.  My wife and I decided that we should come with my daughter.  When we got to the school, our little angel run to us happily and greeted us with a big hug.  At that moment I knew it's worth doing anything for her as long as we shall live.