Mainly bought the book for the last few chapters, hoping to learn how to find peace when someone won't apologise for what they've done, but I was disappointed. There is the entire chapter called "How to find peace", and yet, the only answer she gives is "Any way you can". Oh, thank you so much, it really helps. Seems like Harriet Lerner betrayed the trust I put into her book and should apologise :)
The book might be useful for someone who wants to learn how to make good apologies, though.