Hi Claire, your book and work look very interesting! I did my PhD on eating disorders and am quite interested in how horses can provide therapy for people with ED. Does "On the Back of a Horse" specifically discuss EDs? Even if it doesn't I'd like to read it and would of course be very happy to review it for you on Amazon (and perhaps you could return the favour for my book, "The Trouble with Being a Horse?" -- singlestride.com).
PS I love the fact that you have books in different genres -- I certainly appreciate how difficult that is to do!