A Wide Net.

He had come to Red Dream's farm because the Dollar Cabal is one of the things that he knows that Kelvin cares about. The other thing is Kelvin's hoverbike.

Actually, Kelvin might care more about his hoverbike than his cabal, as it is the closest thing Kelvin has to family, but he can't use Kelvin's hoverbike to find or pressure Kelvin. So he came to find the next best thing.

He found Red Dream's real body within the bunker in the ground and knocked her out. Then he released a puppet that entered her body and attacked her mind.

The puppet found the mental mark that Kelvin had placed in her mind and used it to find his mind on the other side of the connection.

Kelvin sensed the danger quickly and cut off the connection, but it was already too late. The puppet slammed against his mind and was expelled into the world.