Long story short SIL is pretty lazy (in all aspects of life ) and usually always gives us birthday cards really late (it's been up to 8 weeks before)
She already suggested we stop Christmas gifts between us and then suggested just cards for birthday as she didn't know what to get/ couldn't be bothered. (It's not a money issue)
I still always get her a birthday card and always give it to her before or on her birthday.
This year we were away for the weekend over hubby's birthday. This was her excuse for not giving him his card and when he saw her this weekend she said she will just keep it for his next birthday now.
AIBU if I just stop sending her anything ? The reason I feel bad is I make an effort for everyone else in the family including my own sibling so feel like I would be singling her out but I'm sick of her not bothering with us.
I will still do presents and cards for my nephew (she is just at bad at sending for the kids birthdays but I wouldn't do that to my nephew)