Ouch. Carl thought. Having stalkers is not a good thing, she wonders how Relm got their attention. Probably before when the game started base off Elena's Contractor's expression? Or something during those two weeks? Either way considering they are being chased, it is easy to say that their pursuers might have some form of tracking tool or plain searching for contractors.
Still. Just to be on the safe side in case if Relm's stalker wants to take out their competition between them and their goal, she and the other Servants as the obstacles.
"....Let's speed up at times then. If we make a pit stop, it'll give more time for us to stay in a location or two." Carl said. If what Relm said is true, more distance between them and Relm's pursuer means more time for them. This also include being more at ease for the moment. She held onto her bag before start picking up the pace of walking, heading north that Relm pointed toward to.
Irving looks at Relm and nods, before saying to the rest, "Say when to stop or if one of you cannot keep up." They don't want one of their group get lagging behind. When they make enough progress, then the Headless Horseman goes with the walking pace like his contractor. But at a slow gradual pace toward what Carl have set, making sure the others can keep up while also to keep an eye on Carl.