yeah see the way the american extension is, it goes ina big onelined circle over your scalp, the whole lot of your hair is braided in and then they attach the hair peices to the braids.
maybe try google american hair extension, or american way of hair extensions and it will show you..
its a whole lot better i had the ones your sister had as well and i had the same problem it took more of my hair then the extensions all together.
I loved the american way its so much nicer and doesnt ruin your hair..