Yeah, could be. But every other time the fetches were used in the book they were either summoned or sent.
I see the problem there. We're supposed to believe that each time Molly was used as the "end point," but if Molly was in Arctis Tor, she couldn't be the end point to that summoning. Maybe the Scarecrow sent Molly back with the other fetches and stayed behind to kill their cut out.