I think it's a mixture. It's because what she really enjoys doing and it's because it's what her father would have loved.
I don't see her appearing nude any time soon due to the fact her limelight isn't based around her sexuality but rather over the love of animals and the pain of losing her father.
I don't see her going wild and crazy like a lot of the teen stars, in fact if I had to guess, I'd say she's one of the lucky ones.
She's been on TV since she was in her mom's belly, it was destined whether her father died or not.
Now she has a legacy to carry, and I do believe part of that is her own choosing. I don't see her situation as bad as say Shirley Temple, and again, Shirley Temple was one of the more fortunate ones.