Sentence:  Darla stared at her father and said, <WSD>Mummy</WSD>, <WSD>Mummy</WSD>, <WSD>Mummy</WSD>! / Marjorie wheezed and said, Father. You. Are. "Filthy"! / Joe said Daddy′s muddy! Daddy′s muddy! / Darla stared at the darkened doorway where Howard stood, saying, <WSD>Mummy</WSD>, <WSD>Mummy</WSD>, <WSD>Mummy</WSD>, each time a little louder, each time a bit more shrilly,.... 
Meaning of the word marked with <WSD> tags:  mother.