(If I were Virginia Eubanks I might want to capture the pull quote myself, and display it on my book page for visitors who aren’t seeing it through the Hypothesis lens.)
Of course, how would she know that the annotation exists? Here's another example of where adding webmentions to Hypothesis for notifications could be useful, particularly when they're more widely supported. I've outlined some of the details here in the past: http://boffosocko.com/2016/04/07/webmentions-for-improving-annotation-and-preventing-bullying-on-the-web/