Just that. My wonderful mum should be celebrating a milestone birthday. Instead, I've spent the day trying to explain to my children that their grandmother would have loved them dearly and spoiled them rotten. This is all guess work because she died when dd1 was a tiny baby and the other children hadn't been born yet.
I miss her every day. I grieve not just for her but for the relationship my kids have missed out on, for my siblings who became adults without a mum, for all the fun and mischief she should have still been making.
If you have a lovely mum like me, please tell her she is wonderful, hug her if you can, don't take tomorrow for granted.