Love that picture and notice how Sarah has her arms fully wrapped around Trig with her chin touching his head.
I wish I could find the video of Hillary Clinton when Bill was giving his concession speech (after losing his re-election for Gov. of Arkansas). Hillary had 2 year-old Chelsea on her lap - the poor infant was sliding off but HC had this grief stricken look on her face - she had no concern about little Chelsea. It was a perfect cameo contrast.
Look at his happy face in this photo and more can be viewed by clicking the photo.