Of course it's her own choice what she puts online, but imo those blogs weren't overly personal or anything? I would understand her taking them down if she often showed excessive partying and drug use, or talked about super personal things that she now felt uncomfortable having in public. But she only ever vaguely alluded to drinking/being hungover, and rarely talked about much more than what she did or feeling stressed about writing papers for uni.
I think, like someone here said a while ago, she doesn't like them because they're such a contrast to her life now where she does nothing.