I rocked Zac back and forth in my arms, thinking of the choice I had to make as tears slid slowly down my cheeks and fell onto his lovely face. Then, I remembered the words his father told me not yet a week before, to use any means at my disposal to save his life, if it was necessary. And that's what helped me to quickly make my decision. The words 'if it was necessary'. I knew I had to try anything else first. I just couldn't condemn him to a life of constant thirst unless it was necessary. ...