How can I be there?

I hope it’s ok to post here! Don’t know where to post.

My friend is in a toxic relationship. He’s verbally abusive. He talks down to her then expects sex from her. She doesn’t feel loved. They both have kids from previous relationships. Well they got engaged about 2 years ago and she refuses to plan the wedding even saying she doesn’t want to marry him but she feels stuck. I’ve been TTC for about 7 months with my husband. She found out about 12 weeks ago she was expecting. They weren’t trying it just happened. I had my “I’m hurt angry and sad” moment. I pushed forward and became excited and ready to take on auntie role. We went shopping for new clothes last week. Today at 12 weeks(or so) she found out she lost the baby.

How can I be there? What do I say? I don’t want to hurt her anymore then she’s already been hurt. Any help would be appreciated. Keeping it anonymous you just never know who’s on here. Thank you all so much❤️