A Dog Called Homeless

Cally Fisher saw her mum bright and real and alive. But no one believes her, so Callys stopped talking. She hasnt spoken for thirty-one days. A mysterious wolfhound always seems to be there when her mum appears and now hes started following her everywhere. But how can Cally convince anyone that Mum is still with them, or persuade Dad that the huge silver-grey dog is their last link with her?