She also understood that sooner or later she would embarrass Jon, or that he would want her to start acting like a proper queen and stop doing the things she loved. George has always valued her for who she is. He takes pride in who and what she is, just as she takes pride in what he does. It's hard to describe a relationship like theirs to people, because most of us were raised to think love is fire, passion, and prolonged bouts of giddiness and strained emotions. The quieter kind of love looks kinda boring on the surface, even cool-hearted.
Nobody wants that at first.
Some people never learn how wonderful it is to be friends with a lover or spouse, to know that here is someone you can be yourself around, and they will love you anyway, sometimes not in spite of your worse characteristics, but because of them. That kind of lover will stay with you through thick and thin, will make you feel valued always, and will make any disastrous occasion seem less so because you are with that person. That's the best explaining I can do. I don't know if readers will ever agree with me, but at least now you know why things turned out as they did. But she goes home to the guy with the sweet smile.