I can relate to this in a way! I lost my Dad 11 years ago. I received a panic call from my Mum to say she had heard my Dad had been admitted with a heart attack. She was told though he was stable and wanted to see us.
He was in a hospital 30 miles away (specialist heart unit) so we made our way there (though not in a massive rush as we were told he was recovering from op but stable).
My mum called me at 7:30pm he had actually died before this time. My Mum received her information via my Gran who actually already knew at that point he was dead?! Turned out he had been admitted to local hospital 20 hours earlier then transferred out by ambulance for surgery ASAP. Only my Gran knew.
Why we were told after the event that he was ill but fine I will never know. And deep down I don't think I can truly forgive her for denying us the chance to say our goodbyes!
Things have surfaced since Dads death in regards to my Gran that have highlighted her as a manipulative old lady who has a twisted way about doing things. It saddens me she is not the kind old lady I remember as a child growing up but a selfish women.
I didn't have kids when I lost Dad but being in your situation I would have done the same! I will always put my children first over anyone and I feel your family's reaction/comment was unfair!
Have you told them outright how they have made you feel?
My youngest sister was travelling abroad when we lost Dad - was in Europe at the height of summer so it took four days to get her home. She has never forgiven herself for being away but no one would EVER hold that against her.
Hope you can resolve this in someway as it's hard enough this time of year for you without having to struggle with those who are meant to care!!
Am here if you want to talk x