Sorry if kids are looking to celebrities to be role models then the parents/family aren't doing their job.
She's a young girl doing what a lot of other girls her age are doing, she just has more money and the spotlight in which to do it, so it's magnified. She isn't doing what many girls/young women before(older) and after (younger) her will do.
While I may not agree with her lifestyle choices, it's her perogative.
I think that's a cop out...the "I'm just living my life" excuse