Sister troubles and abortion

My sister has been trying for a baby for a year and half and was planned to get married this weekend. I am married and due next month with my baby girl. 3 weeks ago she called off the wedding, said she didn't love him and is now trying to sell the house. She found out this weekend she is pregnant with his baby :( shes seeing the doctor Thursday and hopefully getting an abortion as she wants nothing to do with him and it would make her life hell if they were to have a kid together. I just don't know what to say or how to act around her. I'm not meant to know that she is pregnant but have just been informed. I feel so bad for her. I'm going to try not to post anything about babies until hers is gone and it's all over. It's defo not the right time for her. She has no house, living at parents, she's been out most nights getting drunk as she didn't know she was pregnant. It's such bad timing and the dad is a waste of space who needs to be out of her life so she is doing the right thing. I'm proud of her for being so grown up and mature about it all. I can't say anything though coz I'm not meant to know.

Sorry not really asking anything just felt like i needed to get it off my chest. :(