If she wasn't so focused on getting the pony-Doctor unstuck, Daine might give the two-legger version a reproachful look. So this is where Andrew gets it from - 'it' being the tendency to be unsympathetic towards other versions of himself. And honestly, how can you not have sympathy for another version of your own self?

"Try to relax your neck," she advises the pony version before carefully tilting his head to one side. Once it's canted at enough of an angle that she guesses it'll fit back through, she gives him a gentle but firm push. Out he pops, and she lets out a little sigh of relief before pulling her own arms back through the bars. "All right?" she asks him.