This is not a MIL-bashing thread. I adore my MIL. However, my stepMIL has been a bit of a nightmare the past year or so. Her and my DH aren't particularly close.
For background, she came to visit us last year for a week (without her husband, my wonderful FIL) and although she can be difficult, she was welcomed and enjoyed herself. On her last day with us she was really mean to DSD about her colouring in - DSD was 6 at the time, and SMIL told her off for colouring in different directions etc and basically doing what children do. when DSD had finished and was really proud of her picture, SMIL just said "it would have been better if you'd listened to me". We didn't react to this, but I did take DSD for a walk to the shop shortly after and explained to her not to pay attention to her criticism.
Anyway, DSD's birthday was just before Christmas. FIL & SMIL live overseas. SMIL has just sent me a message on Facebook asking if DSD received her birthday card. That was it - no "hello", "Happy New Year", "Hope you had a nice Christmas" or anything like that. Just "Did DSD get her card?". For what it's worth, DH tried to call her and FIL on Christmas Eve but had no answer so we both sent her a message on FB (FIL isn't on there) wishing them a merry christmas and got no response.
WIBU to ignore her? DH has tried to call and thank them a few times now, she could just have easily have sent a message to my DH but decided to message me because she clearly thinks it's my responsibility to thank her when I don't think it is. DH will send her a message to thank her, but I don't know what I can say to her without replying "yes, thank you" which I don't really want to do because it just re-inforces her perceptions that I'm my DH's bloody keeper!!