Some may think it as a strange claim, but I see "Finding Margo" as a coming-of-age story.  Margo's emotionally abusive and controlling husband and her efforts to please him have in many ways stilted her growth into adulthood.  When she reaches her breaking point and leaves him while in a foreign country she has no plan - she just has to escape.  What follows is Margo "finding herself" in all the ways that clich implies.  Margo learns to take care of herself, stand up for herself, and make decisions for herself, all against a cultural backdrop as foreign to Margo as it will be for most readers.  An excellent read.