Just as this thread has bobbed up again, I'll add that I've now read the Aftermath book, and the extracts published in the press are a bit of a travesty in comparison, to the extent that I wonder whether Cusk can possibly have pre-approved them. The memoir in full is much more comprehensible on the most basic level, and her style feels less forced and choppy.
For those wondering about whether there are more intrusive revelations about her former husband and children in the book - no. The moments which made it into every extract - about realising that her husband hated her, and when her daughter said she had two homes and no home - are pretty much it. The ex-husband literally never appears again, and why they separate is never discussed.
I don't think it lives up to her best work - I've always thought she's a better novelist than she is a fiction writer - but it's disturbing and honest. I think that the not-particularly-attractive, resentful, irrational, self-starving version of herself that she chooses to write about is pretty courageous. People seem to be assuming that Cusk approves of herself simply because she's written a book about her own responses to separation, but I think it's very obvious that she's trying to chart her own responses, warts and all, without approving of them - the 'the children belong to me' and 'I shouldn't have to support him' moments are examples of that. What she was feeling, rather than what she should have been feeling (like her book about motherhood).
Brrr, I've also met her and agree she's difficult in person, but as I am also fairly dour, it didn't bother me. It wasn't a reading or signing, so I didn't feel she had to lay herself out to be pleasant. I also met her ex-husband on the same occasion, and he was much socially easier and more obviously likeable, he struck me as having issues of his own. He did talk then about how he had just changed careers to combine photography and the care of their children (he also had a daughter from a previous marriage), and seemed very positive about it.