xhex was n't precisely sure which farmhouse she was looking for , so she materialized in a wooded area off route 149 and used her nose to tell her what direction to head in : the wind was coming out of the north , and when she caught the slightest whiff of baby powder , she tracked the scent , vaporizing herself at hundred-yard intervals through the scruffy , mowed- down cornfields that had been lambasted by winter 's winds and snow .