OP, you sound like you are very confused. I would be too, my head would be spinning.
It’s very easy to sit behind a keyboard and screen and throw out advice like “go to the police”, “tell everyone in your family” and “LTB” posts from people without them even thinking of the consequence it would cause not only you but your family unit as a whole. I’m not trying to downplay what happened but reading back it might come across like that (please, do NOT think I mean it like that) but from your subsequent replies it sounds like you don’t know exactly what happened.
Could her mum (my mums sister), have known and taken the abusers side for example? I don’t know what to do. If anything
This is what I meant in the above paragraph. You’ve taken something abusive that happened to you as a child (even though you were both children at the time) and now questioning whether your auntie was effectively an enabler for her daughters maybe abuser that you don’t know the name of. That’s a whopping accusation to say about someone, if you did decide to bring it up.
I don’t know, I’m just as confused as you are. I feel sympathy for you
and hope you can deal with it in the best way you choose that will be most beneficial to you. I feel a bit crap saying it and don’t want it to come across like “just forget about it” because I find those sorts of comments abhorrent. But your posts come across like you don’t know exactly what happened, you’re not sure whether it could be turned against you for leading her on (I wouldn’t believe that personally) and that your cousin could have been abused herself and her own mother was in on it but turned a blind eye.
It could all work out brilliantly in the end, it could turn out catastrophically by the end, or it could remain the same and you’d be none the wiser and (probably) feeling worse. It’s really hard. I haven’t voted on the poll as I don’t feel there’s any right answer.
I think you should definitely talk, to someone one-to-one or even people on here, to vent and rant, to seek advice, to get help, to get cheered up, etc. I honestly hope you get the resolution you want and need. Sorry I can’t be more help.