sister in law has to terminate

Alanah • A xoxo
My SIL and I were about 3 weeks apart pregnant - Im 7 weeks, she's 10. She's just found out through her ten week scan that there is a fatal abnormality and she's going to terminate because there is no way the baby will live outside the womb. 
I'm horrified and sad for her and now of course even more scared for something like that to come up on my scans. I want any tips you have for not making her even sadder in my pregnancy and for preparing myself for my 10 week scan without constant panic about something being wrong. 
Thanks everyone