Thing is SM is relatively new and people use it in lots of ways that probably isn't the wisest. I put these grief posts in the same category as Facebook hospital check ins or that's it, just me and the kids from now on. The difference is when it comes to grief people are wary of saying anything that will add to the persons trauma. I know a few people in real life who are always the first to comment socially on a tragic death, they're the most upset, they knew them so well, so unfortunately there is a market for this stuff.
Grief counselling can't really say at this stage if this type of behaviour Is harmful but give it a few years and they will have more research. Personally I believe it is detrimental to all involved, especially children who should not be saturated in so much sadness. Even the good times are tinged with it, yes we had a good time but we had the good time in memory of someone who is no longer here.
I have so many opinions on this type of SM, but none on this person as I don't follow her. But from what I've gathered she is so deep in grief that she can't move on and is fearful of others forgetting him. Sadly that is the reality, I'm 20 years on and the person only remains in the people who were closest to them, everyone else gets on with their lives.
Don't even get me started on the monetisation.