Divorce and heroin

From NPR:

You don't expect your child to grow up to be a heroin addict. From the moment of her birth, you have hopes and dreams about the future, but they never include heroin addiction...When the initial shock wore off, I analyzed and inventoried all the whys and hows of Katie's addiction. I searched for someone or something to blame. I blamed her friends. I blamed her dad. I blamed our divorce. But mostly, I blamed myself.