She's not even a woman, she's a girl.
Sexuality is a normal subject, it's not forbidden, it's not bad to say something like this.
It's human, she's the only wrong one here.
She's probably still a virgin that's why she's like this.
But seriously I get that she might find it offensive but the whole 'sexualization of the popstar' is so normal in pop culture like...
If she really wants to be smart she'd know this.