This sadly seems to happen a lot .
When DD died suddenly at home last September a "friend" of hers turned up at our house sobbing,asked to go into her room for a piece of her jewellery & also for some of her ashes if we decided to have her cremated.
This was only 2 days after DD died ,we were still in shock,didn't know how she died & couldn't bring ourselves to enter the bedroom yet ourselves.
We found out later about the FB posts ,it broke my heart to see my DDs passing used like that & this persons behaviour continued over the following months causing us more upset .
Her behaviour at the funeral was so bad,a lot of people noticed & questioned it.
There was also an old friend of ours that we'd not seen for years who visited "to pay respects " . My DSis let her in ,she marched past her & me sobbing to throw herself at my DH .
When he walked away from her in disgust,she then sat for an hour telling anyone who would listen how well she was doing & how much her children had accomplished!
No mention of DD or even a how are you...I just sat gobsmacked .
The amount of people who came out of the woodwork shocked me, it was very clear who turned up as they wanted to know exactly what had happened to gossip about it .Their behaviour differed immensely to those who genuinely were devastated & wanted to offer condolences.
So those who say you can't police others grief ,you are right but I can assure you it is blatantly obvious when the support is genuine because they actually thought a lot of the person who died.
I appreciated every single person who genuinely came to comforted us ,the school friends who were respectful & didn't feel the need to post their visits & support all over social media for attention.
There are also family who used her death for their own agenda,that I have found the hardest to deal with & I can't bring myself to talk about it yet as it's ongoing.
A year on ,the grief grabbers have disappeared,(apart from token FB posts obviously ) but we still hear from those who genuinely loved DD.