I've been married to my husband for almost 2 years but together for almost 7. We have a 7 month old together.
My husband has 2 older sisters, one of whom is 10 years older (I'll name sally) and the other is 6 years older (I'll name betty)
My relationship with betty is friendly but distant. We get a long fine and at one point we were really good friends but after lockdown we drifted apart because I did not enjoy being around her friends and therefore distanced myself. Since then we are on friendly terms but not very close. Sally on the other hand, i have never been close to. We get a long and we talk at family events but that's it and we rarely text eachother unless we are asking the other a question.
Sally and betty are very close, and they have children similar ages which have made them even closer, they both have 5 years old girls who are best friends, as a result they do things together and do not invite me even though the family put on this "we are a close knit family" facade.
I have always tried to be friends with sally but I find her very difficult. She leaves my messages on read a lot and does not strike up a conversation with me unless she has to. I had her as a bridesmaid at my wedding along with Betty, paid for their dresses, make up, bouquet, etc but after the wedding we went back to speaking when necessary or seeing eachother at family events, this was fine until I fell pregnant. I really thought as the sisters were close and they were excited about a new baby that we would all be really close especially as they are so family orientated. Sally even threw me a surprise baby shower which was wonderful. When my child was born Sally was amazing, she visited us in hospital, bought us essentials, provided us with advice as first time parents and she was do doting. As time has gone on, she has slipped into her old ways, barely replies to my messages, never ask me how our child is but I know she speaks to her brother (my husband) and it just makes me sad when I think how close Sally and Betty are and how often they see eachothers kids. It's made me not want to reach out anymore and put in equal effort but it makes me sad because I want my child to have a relationship with their parental aunties. Betty has photos of our child in her home but Sally doesn't. Sally has photos of bettys child but not mine which makes me resentful but don't want to address it and cause family drama. I'm putting my child in nursery this year because I am going back to work but did not tell Sally for the reason that we do not speak often and it will be weird messaging out the blue to say "hey my child is going to nursery".
My parents in law told her and apparently Sally was really shocked that I never told her because Sally works in a nursery and she could give me advice about funding etc.
But why would I message someone out the blue who rarely replies to my messages? But now she's shocked I never approached her. It's made me really annoyed. She could have asked me what my plans were when I go back to work but she's never asked.
The point of this thread is how do I deal with a difficult sister in law who doesn't seem to make much effort with me but I don't want my child to miss out on a relationship?
For reference, Betty does reply to my messages and so far seems more doting so this thread is mainly more about how do I deal with Sally.
Thanks!