I woke with the dawn to find two little faces curiously watching mine. Katie was sitting on my stomach. Alex was perched to one side. “Whatcha doing?” Katie asked. “Sleeping,” I replied, closing my eyes. Alex poked me in the side of my face with a damp and chubby hand. I half-expected him to say something, but no words accompanied the poke. “You go ’way?” Katie asked, wriggling to get comfortable and elbowing me directly in the kidneys. “Mama’s sad.” I gave up trying to sleep and opened my eyes. “Big sister has to go away for a little while,” I said. “You two have to take good care of Mama while I’m gone. Okay?” Alex nodded solemnly. Katie screwed up her face until her little baby forehead was as wrinkled as a shar-pei. “Why?” I wasn’t sure if she was asking why I was leaving or wh

