Leo Tolstoy famously wrote, “All happy families are alike; each unhappy family is unhappy in its own way.” The problem is that I’ve yet to meet a family that fits into Tolstoy’s tidy categories of “happy” and “unhappy.” The reality is far messier. Put tears and laughter, love and betrayal, fights and hugs into a blender and out will come a family. Even in homes where the walls are decorated with portraits of grinning moms and dads and kids, there’s usually a closet door that’s kept shut. Last week we were reminded of that, when the media flung open that...