Initially I hated the book. The narrator lacked self awareness, and nothing profound yielded from that observation either. I persisted, hoping for some kind of comeuppance for this character, something to show the errors of her ways. But she's just a financially privileged young woman trying to find her way, to find herself, to find meaning, to find peace, to grow up. Wealth gives her options but also gives her few distractions from the emptiness and disappointment in her life. She has to come to terms with death, or rather, with living with death, with very little preparation for the task, as I imagine would be the case for any privileged young person -- or underprivileged one, perhaps.
The ending changed everything for me. I was 3/4 of the way through the book before I realized what was coming. For many books, the ending ruins it, but here, it makes it.
It's a book about art and entertainment, about friendship, about mortality and mourning.