In discussions of this sort there's a danger of analyzing too far-- everything we say or think, after all, is from a human
mind --- which in turn can be analyzed into just a soup of chemical reactions.
So I am one who isn't afraid of anthropomorphizing-- sometimes it's just as close as a human can get to understanding another species.
Studying the horse as a natural herd animal, understanding the way it has evolved to deal with survival is foremost. Any emotions will have to be consistent with this.
The problem I see is one person seeing a behavior as "love" and another as "gluttony." How you'd handle this would differ! "Laziness" vs "unmotivated"; "not accepting" to "not understanding"; is it "anger" or "frustration"? The human response may well differ from very similar horse (mis)behavior. Is she on the bit, or is she being forced into a frame? "On the bit" implies submission, confidence, and a willingness to move forward. A flash will mask your problem--- I used one for some 8 years, and when my trainer left, I took it off --- and I realized my horse hadn't learned a thing.
People who use forse, and only force, are often successful because they are simple to understand and consistent. Horses like that combo, and are perhaps less afraid of physical bangups than we are. I also believe horses are very, very sensitive to human emotions--- what I call "vibes" --- and without analysis
will nevertheless respond to them as they would to a gust of wind or the sun on their backs.
BUT comparing a horse to a child would be wrong: a child is incomplete.