Not everyone should or is going to stop doing things because of a tragedy that doesn't directly affect them. Nobody has a right to pass judgment on her for posting a picture on her own page. She probably didn't know some journalist was going to wave it in the faces of grieving parents for the sake of a trashy headline.
Very true about the journalist. Thing is with public judgment - that is all a lot of these 'celebs' have. If she wants to remain popular with the general public, and hence remain a popular celeb (if she is), then she needs to be careful of her actions.