Complex sentence: As the children hide from the monster, the amulet tells Emily that to save their mother they must find the house where Silas lives.I gives her clear directions but as they try to follow them the monster runs after the children, but the amulet helps them escape.
Split into simpler sentences: As the children hide from the monster, the amulet tells Emily that to save their mother they must find the house where Silas lives. The monster runs after the children, but the amulet helps them escape.