I've never been that close to her - stemming from the fact that I went away at an early age for my education and she didn't. Ergo, I wasn't living at home with my parents and she was. I didn't really see her much and our lives didn't really cross over.
She settled at an early age, had children and then split. She met a new guy and had more children.
So an issue for me has always been presents. I am expected to buy birthdays and Christmas, and I also buy separately for the adults. So that's 14 presents a year. I tried to scale back a while ago but it was met with a lot of tears and upset from the family. Anyway, she then has to get me something at Christmas time and for my birthday. To be honest I cant remember the time I last received something ahead of the day. Usually its a few weeks after the event. I sometimes find myself opening my Christmas present in February or March. I'm pretty old school and still pop a card or a note in the post just to say thanks.
It was a big milestone birthday for her recently and given COVID she couldn't really celebrate. But she did have a "socially distanced" gathering - to which our parents and aunts/uncles were invited. I wasn't .. which I sort of understand. I would have preferred if she told me, but really the first I knew about it was actually the weekend before. So instead I spent quite a lot of money on a present for her. Way more than I would spend, and my sister would have known the value.
Since then I've heard nothing .. no thanks... nothing She found the time to send me pictures of everyone having a good time but couldn't even be bothered to text and say thanks.
What do I do. Say nothing and realise that it will always be like this. Or say something. Or just quietly stop buying presents for them all. Over the past couple of years she mentions a desire to have a closer relationship with me.. tbh, I'm pretty happy not really ever speaking to her again.