I'm 23 weeks, sis-in-law lost her baby...

I'm 23 weeks pregnant and found out 2 months ago that my sister in law lost their baby at about 6 weeks along. They didn't want to tell me at all so as not to worry me. Anyway, I had been trying to spend time with them before that, which didn't work out with their schedule. Now, my brother has told me that she doesn't want to see me because my belly reminds her of her loss, basically. I want to be as sensitive as possible, but the selfish part of me is sad that my brother and her aren't going to be involved in my pregnancy at all. They don't ask how I'm doing, don't want updates, and are not coming to the baby shower. I don't even know if they will want to meet our little one. I can only imagine what she's going through, and I ache for her. I'm just not sure how to resolve my feelings about them not being around. :( Any (kind) advice would be appreciated.