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I believe you when you say this author is "fiercely intelligent", "self-deprecating", etc. in her writings. I also believe (very easily) that, as you said, self-absorbed and self-congratulatory would work as well (just who ARE these extraordinary folks that have the time and money-- and the lack of commitments at home-- to go jaunting off like this??) Maybe I'm just not fanciful enough to get carried away by this kind of story. I did roll my eyes once or twice, although you said you didn't.
I'd rather hear a stiff "he-done-me-wrong" nitty-gritty breakup bit about how some sop got over the miserable thing without the help of grandiose locations and Brazilian lovers-- just maybe with some booze and a buddy or two, and the long slow healer time, like the rest of us. Seems more relevant.