Should I tell my family my brother in law molested me when I was a kid?

JustinTheGreat
A long time ago, my sisters husband molested me when I was around 7-9 years old.
i didn't tell anyone back then because I didn't know it was a bad thing.
i didn't even remember or realize how bad it was till I was 14. And then I just thought it was too late to tell anyone.
but I have been thinking about it a lot lately. I feel like I should tell someone.

The thing is they have a child together. If I told them, my sister would probably break up with him and she would be left a single mother. And he would probably never even see his kid. I would break up a family... and I break up a couple that has been together for 18 years.. I don't feel like it's even worth ruining a family over something that happened over 10 years ago.
Updates
+1 y
Im also nervous that it would happen to their daughter, who is 3.
Plus I have a 13 year old niece, it could of happened to her too. She seems to dislike him, maybe that dislike came from him molesting her? I don't know. It's hard to tell them. But I think I will try
Should I tell my family my brother in law molested me when I was a kid?
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