and Hannah, are there summer camps or summer school sessions where you can send your sister? Trust me, as I've said repeatly, you do not want her to grow up with stunted social-emotional abilty....and that's an area that is SO negelected in mainstreamed dhh (and other mainstreamd kids with disabilties)
I really wonder if your parents might have really thought this out.....if it's this bad socially NOW...imagine how bad it's gonna be when she's a teen? Do they want her to never have had a real friend, (not to mention never having a real girlfriend/boyfriend) to spend her entire social life talking on the computer rather then in real life, to do all kinds of things? Social issues are very important...maybe you can get a social group started up...and that could help a LOT...and maybe when she's older she could go off to school or something.