The Heart of a Woman seems to be WP:COMMONNAME

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These were results filtering sources from 1970 onwards, although in reality it is only a dozen sources for each which show up when clicked through. In ictu oculi (talk) 13:18, 2 May 2017 (UTC)Reply
This isn't one of her works that has kept well. During the time when it was read, I'd say it was clearly more a British book than a USAnian one; the "common name" should date from when the name was common.
More importantly, Google has its tentacles in deeper in some locations than others, dunno how that plays here.
Finally, as you note, there is no great number of sources showing on Google, and little difference between them. Anmccaff (talk) 14:11, 2 May 2017 (UTC)Reply