She was determined that her children would not grow up in what she called a “broken home.” And this is one of those impossible equations that every parent tries to calculate in some measure: is it worse for the kids to have an imperfect parent—in Rocky’s case abusive, addicted to meth—than to have no parent at all? In the endless constellation of ways we feel we can mess up our kids, which are those that will inflict the least damage?

