Reading this felt like a chore. I alternated between hating Rosemary and pitying her several times, but I never cared about her or any of the other characters. The entire thing was just one long self-analysis by an extremely irritating woman with absolutely no plot. I absolutely fucking hated Harlow, and probably would have given this two stars if she hadn't been so unbelievably obnoxious.

Spoiler

I was also aggravated by the fact that she is introduced in a way where you cannot help but hate her, and then halfway through Rosemary is like, I couldn't help but like her because she is chimp-like. Fuck off.

I really loved the idea of Rosemary's struggle

Spoiler

about what it means to truly be human when one spent five years with a chimpanzee as her sister, and how that has affected her whole life

. But I hated her headspace and the entire book just fell flat for me.