To My Dearest Friends by Patricia Volk

Alice and Nanny have never met before, but they have one thing in common: their late friend Roberta. Alice is the prim proprietor of a chic Madison Avenue shop, while Nanny is a sharp-eyed Manhattan real-estate broker. This New York odd couple is thrown together when Roberta trusts them with her last request—that together they open her safe-deposit box. What they find inside compels these women to address a surprising truth about their beloved Roberta. A profound yet hilarious novel, To My Dearest Friends is the story of two women and a journey of friendship neither chose to take.