What do I do?

Ca
My husband has a cousin that is having a hard time getting pregnant. We had no idea about this until after she had a cold reaction to our pregnancy announcement. She was finally recently able to try a fertility medication and became pregnant on the first try only to lose the baby before she was even 8 weeks. We are sensitive to her struggle when we are around her but we're not even supposed to know about it all, my MIL told us. My husband and I just went on a babymoon while we were on a break from school and posted the pictures. Not even an hour later his cousin said that she thinks she needs to leave Facebook for awhile. I'm convinced it's because of us. But I'm not sure what to do. I can't say anything to her about losing the baby because we aren't supposed to know and I don't want to not enjoy my pregnancy and my baby because it might make her feel bad. But I also wouldn't purposely rub it in her face. What do I do about it?