My SIL (DH's sister) has always kept me at arm's length despite my attempts to have a closer relationship. Even though I have found her withdrawn attitude to be rude sometimes, we have never had a fallout and have remained more or less courteous to each other. On the occasions that I have asked my DH about why she puts such a distance between me and herself, he has always said that this is what she's like and that it's her choice.
It's not like I was suffocating her either, I just wanted to have normal SIL interactions—talk about stuff in common (we have a few things), be kind and friendly to each other, share mildly personal stuff, show some interest in one another. However, during the many years we have known each other, she has made it abundantly clear to me through her apathy that she has no desire to interact more than is strictly necessary. Questions such as "how was your trip?" or "do you like your new job?" are frequently answered with monosyllables while she browses IG. We have friends in common and I know she acts VERY different around them, which is very puzzling, but whatever (they think she's very extroverted and friendly). I have tried to go out for lunch/ a coffee/ shopping with her and it has always been awkward.
This is something that I found hard to accept at first—and needless to say, extremely bizarre—as I didn't understand why I was being rejected, but I am now totally at peace with it and I respect her need for space. There is a mutual understanding that we are family, not friends, we help each other if needed and we see each other at family gatherings, but that's about it. I am actually happy with this arrangement now.
I am now pregnant and her attitude towards me has changed drastically. She's very friendly towards me, she's checking on me frequently, she is suddenly sharing personal stuff with me. She even hugged me and said she was super excited to be an aunt, which was shocking. This makes me very uncomfortable because for me nothing has changed and I don't feel like sharing anything personal with her, including details about the baby. It even seems to me that she now wants to be closer with me so she can have access to the baby? She fantasizes about being a "cool" aunt and I guess that can't happen if you don't have a normal relationship with the mother of your nephew/ niece. I know I might sound petty, but I feel that she should have seen the importance of fostering good family relationships many years ago instead of pushing me away, which I found hurtful at the time, and now it's too late. Unfortunately, I now find myself resenting her for deciding when and how my friendship means anything to her. AIBU? How should I deal with this tactfully?
I should mention that she is not very close with DH at all, although they they care for each other deep down I guess. I get the feeling that she as well as the rest of the in-laws find it easier to interact more with me in order to have a relationship with him as they all have a history, if that makes sense. I believe that they are all thinking that this baby will bring everyone closer together and we'll play Happy family. I am not entirely comfortable with that kind of pressure and just wish to enjoy my new little family in peace.