I realize this isn't a "Wedding Party" question, per se, but I wasn't sure where else to write this.
My FI's older brother and his girlfriend were dating five years before they got engaged last year. I hadn't known them for that long when it happened, but according to everyone in the family, she was pushing for it for awhile, and FBIL wanted to take his time. They planned their wedding for September 2010. Two months after they got engaged, FI popped the question to me. We decided to get married in November 2010 (we'd been talking about it for some time), a little over two months after they get married.
I really like my FSIL and I want to be close to her, since we're going to be family. But ever since we got engaged, she's seemed very uncomfortable about the whole thing. My FMIL constantly tells me and FI to "scale back" or "don't talk" about our wedding plans or anything related, because she doesn't want FSIL to feel like I'm "stealing her thunder." It doesn't bother me that we have to keep everything quiet, but it does bother me that apparently we're hurting FSIL's feelings and possibly alienating her by getting married two months after she and FBIL. Do you guys have any advice as to how I can bridge this gap? TIA.

Books read in 2012: 21/50