Once or twice of late she had won a large sum, and instead of keeping it against future losses, had spent it in dress or jewelry; and the desire to atone for this imprudence, combined with the increasing exhilaration of the game, drove her to risk higher stakes at each fresh venture.
There are no more uses of "atone" in the book.
Show samples from other sources
To atone for sins is a common religious theme.
Approved forms of faith, practice, and conduct were laid down as consistent with orthodoxy, and deviation from these standards had to be confessed and atoned for by a prescribed form of penance.
Dictionary of the History of Ideas -- http://etext.lib.virginia.edu/cgi-local/DHI/dhi.cgi?id=dv1-50(retrieved 05/20/06)