Sentence:  3. Cookery is familiar to her, with the price and quality of provisions; and she is a ready accountant. Her chief view, however, is to serve her mother and lighten her cares. She holds cleanliness and neetness to be indispensable in a woman; and that a <WSD>slattern</WSD> is disgusting, especially if beautiful. 
Meaning of the word marked with <WSD> tags:  A dirty and untidy woman.