When I farm I set my free port (have an authenticator) to the aetherite in that zone. Helps to get around quickly when one spawns on the other side of the map. For you, do a fate if someone follows you, just free port (or return on 15 min timer) to the aetherite and run to the fate. They will be left in the middle of nowhere. The other option is to intentionally run to an empty area of the map and wait for them to run away because you took them away from the fate.