Well, I dont have a FB account, but it seems like whatever is posted there (replies to other people, timestamps, photo tags, captions on photos, etc.) can be taken wildly out of context, so that makes me very uncomfortable.
I agree with the other people whove made mention of not truly knowing what you might do when faced with an extraordinary circumstance, shock, or stress. I lost someone very close to me after a very long illness. She died in my arms. Even with all the anticipatory grieving Id been going through, I was not prepared. I did some very strange things that day and for several days, actually. I fixated on work, keeping previously scheduled appointments, and being hyper-functional. I can see how someone could judge me by those actions and assume I didnt care. My mind just really wanted to cling to things I had control over and keep a routine. I still look back on certain things and think, why did I do that?
It sounds like FB was important to her and part of her routine prior to this tragedy. I have no idea what I'd do in a situation like this. But I do know the mind does some strange things to preserve itself when faced with shock. So, I try to keep an open mind and not jump to conclusions.