Sentence:  Tidings had reached her of this and the other man's success, and,—coming near to her still,—of this and that other woman's earnings in literature. And it had seemed to her that, within moderate limits, she might give a wide <WSD>field</WSD> to her hopes. 
Meaning of the word marked with <WSD> tags:  An unrestricted or favourable opportunity for action, operation, or achievement.