The year 2007 saw the release of Juno, Waitress, and Knocked Up—all movies whose protagonists face unplanned pregnancies, but none seek an abortion, despite being in situations where it might be a good idea (see: high school, an abusive relationship, Seth Rogen). It was as if the filmmakers didn’t think a movie about an abortion could be interesting. But last year’s Obvious Child was evidence to the contrary, and so is Paul Weitz’s Grandma…