My hope is that every time Kim tries to pull a bigger con Rex does something nice that utterly details the con BUT Kim has to accept to maintain access to build up his next con and every time it digs a hole deeper for her that she can't escape and Rex, being a decent guy, just keeps doing everything he can to help. Endlessly oblivious to how much Kim hates him.
CBlack stories usually have the decent people ending up okay and Rex is probably the most decent person he's ever written.