I don’t know why anyone would expect any different.
Just because she had a part on a relatively wholesome TV show doesn’t mean she has any values or virtues herself. She’s just an actress ya know.
She could try the Hannah Montana routine until she’s blue in the face but she’s outgrown that audience. She’s probably made enough money to never have to work for the rest of her life but she’s an entertainer and there is something about having thousands of people cheering you and worshiping your every move that makes you want to keep going. She’s obviously trying to market herself to a new demographic now.