Like her honesty and her factual attitude to life and writing. Gripped me from start to finish. Reminded me a little of Hans Fallada's observations and style of writing.
There is an introduction to one of her memoirs (Instead of a letter) by Andrea Ashworth, who puts it better than I could:
"Her language combines immediacy, ease and precision of expression"
Hers is a rare kind of candour, she addresses her readers with a strikingly modern lack of squeamishness and secrecy about personal experience, but is never gratuitously shocking or cloyingly confessional."