I wanted to like this film more than I did, but I am giving this 3 stars due to the strength of Aud Mason-Hyde's performance, the teenage actor playing the child and grandchild, respectively, of Olivia Coleman's and John Lithgow's characters.

I have a question, particularly for people (like myself) who are from first- and second-generation ethnic-American families living in NYC's outer boroughs: Didn't the family seem more Italian-American than Greek-American?
With my nit-picky question out of the way, there was a lot of great acting in this film, particularly by Olivia Coleman and Jessie Buckley who so believably play the same complicated character at different ages. It's great that the director, Maggie Gylenhaal, decided not to rely on make-up and prosthetics to transform an actor to look 20-years older or younger.
RIP Catherine Burns. Her well-deserved nomination for an Academy Award was not something that served her well. See www.hollywoodreporter.com/features/catherine-burns-inside-50-year-disappearance-an-oscar-nominee-1275646 .