I'm sorry it was a lonely feeling today. There are so many experiences that are not as we imagined they would be. That's a hard one for me, too.
Your D's are such young ones, babies....it sounds like you're doing such a great job keeping things normal, and your sense of gratitude is undoubtably being passed on to them.
I'm glad your D6 didn't seem to notice his absence. The not calling, no email or anything...is pretty rotten. It sounds like the birthday parties may have served as good distractions for them, though.
Congratulations on a such wonderful milestones, Mama!