expecting a Dot turn-around
I'll start with saying that I have no real evidence of it going this way. Just a hunch. And (I may be wrong) I can't think of anything that's happened so far that would absolutely prevent it from being true.
We'll find out more about Dot and Roy's history. Maybe his first wife was sick, and Dot came in as a nurse/cult member, finished off Wife 1, took her place, Roy later found out, Dot ran. So we'll come to root for him instead of her. Illustrating today's politics or something.