I was really looking forward to reading this, but I thought it fell flat. I didn't find the characters compelling, and it seemed as if the two sisters were set up to be almost caricatures of the intensely organized, practical business woman and the spacey vegan tree hugger. Caricatures are hard to identify with.
And, I'm not crazy about books that use the 9/11 attacks to wrap up complicated personal relationships without having to deal with the issues or resolve the situations.
It wasn't a bad book, just not compelling.