On searching for 'fiduciary duty' I found that an image from a [page on my site][1] is shown alongside text from another site in a featured snippet. 

Search for 'fiduciary duty' in Google. The featured snippet shown below should appear. The snippet pulls content from two separate sites - law.cornell.edu and stakeholdermap.com.

[![Google Search: featured snippet, linking to 'law.cornell.edu', but showing an image from 'stakeholdermap.com'][2]][2]

I want google to index the stakeholdermap.com image, because I want users to come to my website via the image. 

The problem with the google snippet is that users will click the law.cornell page expecting to see the image in the article. My issue is that the law.cornell.edu page is getting most of the benefit from my image.

So, do I just accept this as I am at least getting some traffic OR should I try to stop Google from doing this?

  [1]: https://www.stakeholdermap.com/fiduciary-duty.html
  [2]: https://i.sstatic.net/T03i2.png