Miscarriage in the family

Gina
My sister in law had announced to our family at the holidays that she was pregnant. We found out the week later that we were expecting also. When they went for their first ultrasound they found out their baby had stopped developing. Since then she has been dealing with the emotions of losing her baby. We recently had an ultrasound and found that our baby is healthy so far. So we began telling our immediate family recently. Well I am going to be 12 weeks this week and it was time to tell her about our pregnancy. 
We decided to tell them in person last night. We sat down with them and my husband told his sister. I couldnt even look at her. I felt so bad for what happened and the timing of our pregnancy. I kept apologizing to her and trying to change the topic. I know there is nothing any of us can do about the situation our family is in. But I hate that I have caused her more pain and sadness.