Sentence:  "It "is" Miss Halliday!" cried the house-maid, as she opened the door. "And oh my," she added, looking back into the hall with a sorrowful face, "how bad she do look!" [...] "Oh, don't she look white!" cried a <WSD>shrill</WSD> girl with a baby in her arms. 
Meaning of the word marked with <WSD> tags:  Having a shrill voice.