I think I abused 7.5 years younger sister

I'm now a young teenage girl and when I was 12 I think abused my little sister who is 7 and a half years younger and was 5 at the time.

I asked her to play doctors and to "examine" my breasts. She was curious and enthusiastically said yes. (Not that she was old enough to consent, just that she was enthusiastic). She touched my breasts under my shirt while I masturbated. At one point she asked me what my hand was doing in my pants but I just said it was nothing. Eventually I climax but I don't think she noticed anything because I didn't make a noise just tensed a bit.

Then I told her not to tell anyone or we would both get in trouble even though I knew only I would. I realised what I'd done about a year later and I've felt intense guilt since. Do you think this could have affected her mental health or wellbeing? It's been a couple of years and she doesn't seem repulsed by me and I would say we're fairly close. I know that these things can resurface in adulthood but though.

Thanks if you read this, I'm sorry for what I've done.

If I am honest I have felt confused/ unsure about replying to your message, sadandsorry. If you are 14/15 you are not meant to be on the forum, which is 16+

Personally speaking I do not agree with jail for kids of your age, certainly not anyone younger than 14. I do not think it is helpful and I think kids do strange and harmful things because their brains are not fully developed and they are working through new feelings for the first times and, without guidance, that is a recipe for disaster. So don't be so hard on yourself.

I would advice therapy if possible, if only to work through this. I am glad you seem certain that you will never do something inappropriate like this again. Be the best sister you can be... I don't think this is something you should raise with your sister, but if she brings it up, then you must be accountable and apologetic, even if that means punishment.

It's clear you have become a decent, self-reflective person. Keep your chin up.