She was vexed to see that, in spite of so many years of vigilance, she had blundered twice within five minutes.
But all the while another self was sharpening her to vigilance, whispering the terrified warning that every word and gesture must be measured.
The cleverest girl may miscalculate where her own interests are concerned, may yield too much at one moment and withdraw too far at the next: it takes a mother’s unerring vigilance and foresight to land her daughters safely in the arms of wealth and suitability.
Finery laid off is as unappetizing as the remains of a feast, and it occurred to Lily that, at home, her maid’s vigilance had always spared her the sight of such incongruities.
There are no more uses of "vigilant" in the book.
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We need to remain vigilant when interacting with websites we don’t know.