Same here. I'm trying to not to "judge" her for not checking on her or kissing her "bye" that morning.
But for me personally, i can't understand it at all. I can never leave my kids w/out kissing them bye and "i love you" is always the last thing i say to them before i leave them or they fall asleep. It's the most "peace" or "comfort" i can get being away from them if that makes sense and even then i still am uneasy and worry about them like crazy.
Needless to say, i'm not away from them for very long at all ever lol.
School is the longest period of time away from them.
I check on them a lot while they're sleeping and they're not even that little anymore. Yah i know i'm a little overboard so it's really hard for me to understand being the opposite.