So I have basically no relationship with my SIL. It’s a mix of neither of putting any effort, and that she’s made a couple of comments about how we spend our money.
It’s not exclusive to me either, she barely talks to her own brother.
However, the other day she wrote a big post about congratulating her “great friend “ (my DHs ex) on her birthday.
I know they were once close, but I also know they don’t really see each other anymore (as per my DSC).
I know she has every single right to do it, but it definitely felt a bit “tactless” from my POV, but I also know I genuinely have no reason to complain.