I come from an 'interesting' family and my sister and I are pretty close. I (being older and married with a family B"H) did a lot for her when she was single, and helped her through Shidduchim. Even since her marriage, when any issue arose, I'm aways the first person she calls. I'm always there for her.
We don't have a great relationship with our parents which made our relationship closer. My sister married a wonderful boy from a large family and moved out of town. I figured we'd maintain our relationship albeit with slight changes while she adjusts to marriage. Well I'm not exactly sure what happened or when, but it seems like her husband tries to distance her from her family. I understand if he were doing that from my parents (we also need distance from them at times) but myself and my husband are pretty warm family-oriented people and I don't understand why he's taking her away from us. He lives next to most of his siblings and I know they get together often. Since we are in a differen town, we rarely see each other. But why would he pull her away from her only sister while they get to maintain close relationships with his side of the family? Before their first child, they'd go away often to his relatives/siblings. They came to us only once. Then after the baby, it's too hard to go away.
When I speak to her, she sounds happy and she doesn't seem aware of any of this. (I don't tell her my feelings.) Anyway, I just wish he'd encourage her to spend more time with us and be more involved with our life. (And no - she doesn't work - so technically could take a trip to our town during the day.) I feel like I've always been there whenever she needed me, but otherwise I don't hear from her.