My older sister came up to me a few days ago and I could tell she had been feeling upset. She told me if she tells me something I cannot tell our parents because things could get worse, so I said ok. She told me she had sex with her boyfriend a day ago. I was really shocked and confused. I knew what she had done was terrible, but I really don’t want her to feel worthless and like trash. I made sure she got to confession and did not have communion before she went to confession. I even gave her one of my “Theology of Her Body” book, which she was grateful for after reading it. My sister is 16 and I am 15, but telling my parents is not an option. My biggest concern right now is if she truly regrets it. She says she does and that she will never do it again, but I am not sure. I have tried to talk her into breaking up with the guy, but she won’t. She says that now I should be hoping that they get married. He is not a bad guy, but he just does not realize that this sort of stuff is grave. I tried to tell her that I would like them to get married if their relationship leads them to be better people, but they should still take a break. But I also said that if she thinks that if there is any way that they will just be leading each other to more sin than they NEED to break up. Did I say the right thing? I am afraid of saying too much and act like her mom and give her too many pep talks that mean nothing to her. I also do not feel like I can say all of this to her since I have not been the best catholic at times. She says that now she is not sure if she should have told me since I am just going to judge her. I know secretly she is scared. She is actually a really good caring person. I am trying to be loving, but I think I need help.
If there is any advice I could get that does not involve my parents, that would be greatly appreciated