She recognized the strange happiness that came from loving something without knowing why you did, that strange happiness that was sometimes so big that it felt like sadness. It was the way she felt when she looked at the stars.
You really didn't see the sadness or the longing unless you already knew it was there. But that was the trick, wasn't it? Everyone had their disappointment and their baggage; only, some people carried it in their inside pockets and not on their backs.