Sounds like typical post-vacation blues with a side of some kind of churchgoer sloganeering.
People use facebook for different things and lots of people are willfully ignorant about the relative severity of human suffering.
Which bothers you more, her “behavior” in this situation or your inability to ignore it or accept it as the limit of someone’s imagination?
I’m not saying I have an answer, but I do know that I’ve struggled for years with this question of being aware of my many blessings in life relative to others and yet still feeling immense personal suffering. My increase in awareness did not decrease my feelings of suffering, and while it was not possible for me to choose ignorance, I don’t know that being blissfully ignorant is a better route. It takes something else entirely to accept the vast suffering of others and the immediate suffering of oneself. Maybe something transcendent.
By the way, do you see the irony of you basically wanting to complain about her complaining? ;-) On facebook? People are dying, you know.
Sometimes, I look at those kinds of folks and realize how limited their imaginations are. That’s mostly how I deal with it. One of my relatives always has to talk about the pennies she saved. Another about how tragic some newsworthy death is. Whether I wish they were different or tell them they should think differently, chances are they won’t until they see it for themselves.