Connecting teenage son w/other teenage adoptees from South America

Hi My younger sister and I are both adopted from South America, whilst I am quite interested in learning about my history, my sister is not so fussed. She isnt really interested at all in learning about her biological family, her family history or even anything really about the country that she's from. My parents always try and encourage her, whenever there's a tv show on about it or using it as a topic for a school project but it doesn't interest her. She always ends up rolling her eyes at our parents :P as only true teenagers can. I know it annoys her when they do that and they know it too, but its more of a 'if you want to take this opportunity to ask us anything you're welcome to' sort of thing, like keeping the dialogue open - just in case. My sister just isnt interested yet, she has her friends, she goes to school, this is her life. The live that she might have had in S.A isnt her reality, so its just not as important or as interesting as what's happening at home here, not as important as going to school, meeting up with friends, her family, its just another part of her life, that happens to be different from most kids that isn't as important as the more immediate stuff :) We've grown up knowing we can can always ask questions and always find out more whenever we're ready. And I think, to me, thats the most important thing, I know she'll be curious one day and when that day comes my parents will help her in any way they can. My sister isnt very social with our relatives, the age difference probably has something to do with it - they are mostly much older than both of us, the fact that we dont see them much doesn't help, their virtually strangers to her, I got to know them when we were both quite young but I remember them so that probably helps when I see them now. She doesnt really know what to say to them and when we get together its more of a 'grown ups discussion' so its sort of boring for her, she'd much rather be at home reading a book :P I dont know if any of what I said helps, but I wanted you to know that your son isnt the only one who isn't really interested at all. My parents I suppose are concerned that despite us growing up in a vastly different culture to that in S.A they dont want us to feel lost should we ever go back to our home country because despite us looking latin we dont speak the language and we dont know the culture I think they worry that we'll feel isolated that and they dont want us to lose our heritage. Our differences are what make us special and I think that as we are adopted that just makes us a little more... colourful culturally than your average child and they dont want us to lose that :)