Engelsman 57: "Once a moon goddess, [Hecate] is now strongly connected with both Demeter and Persephone. First, she accompanies Demeter in the search for her daughter. Second, she reappears after Persephone returns from the underworld and accomapnies her from that day forward."
Engelsman's conclusion, 58: "Hecate is a shadowy, cthonic person who yet carries the light."