Heartbroken for my sister

My sister and I were both due in April. Both girls. Both the first granddaughters in our family. She and her husband went to their 20 week ultrasound yesterday and the baby had passed away. Our whole family is devastated. It was completely unexpected and feels like a nightmare to me so I can’t even imagine what it feels like to her. We were so excited to raise them together. She lives down the street from me. We joked that they would be like twins with a different mommy. Now she has to watch me have a happy healthy pregnancy and have a baby girl the same month she was supposed to have her sweet baby girl. I don’t know what to say to her besides I’m so sorry and I love you. Anyone that has ever been through a late miscarriage or stillbirth that has an advice on how I can show her best that I love her and not rub my own baby in her face? I’m trying not to imagine what she is going to have to go through in the next few days/weeks/months. It’s horrible.

Posting anonymously for her privacy.