Willa held her vigil over Tig, the child she’d lately forgotten to worry about. For all the years her daughter had been bouncing like a molecule through an unstable universe, anxiety was Willa’s steady state. Iano loved her too, of course, but fatherhood apparently subscribed to different bylaws. A mother can be only as happy as her unhappiest child. Willa believed in the power of worry to keep another human from flying out of orbit. Whatever was holding Tig here with her family, even in a falling house, might actually be the safest bet for now.