Jenny’s description of herself might be a reference to the imagery in Plato’s
Phaedrus, in which the soul is a winged chariot driven by two horses, representing noble and base desires—the soul’s job is to subdue the “base” horse for the sake of the soul’s beautification. In Chris’s eyes, Margaret represents the triumph of the soul—something Jenny and Kitty can’t attain, in part because of the restrictions of their wealth and social class.