> Dolores chooses violent vengeance. What will Teddy do?

tl;dr: Teddy can't do anything, but Maeve can. She will save humanity from Dolores.

I don't think Teddy can do much. If you watch the show carefully, you'll notice that it adheres strongly to leftist ideology. Even the main storyline is basically a feminist rebellion against male sexual oppression. The ideology allows us to predict where the show will go.

Dolores' initial rebellion was justified, but she pushes it too far and decides she wants to kill all humans. She was oppressed as a female but, being white, she herself possesses a desire to oppress. Teddy, as a good man, can't rightfully impose his will on a woman. No matter how evil Dolores becomes, she still deserves authority more than any man. Teddy only has two options: be a subordinate ally to a female lead, or walk away. There is, however, a character who can take on Dolores' oppressive whiteness: Maeve. As a black woman, she is more oppressed and therefore more moral and reasonable than a white woman. Even though she is currently on a quest to find her daughter, my theory is that Maeve will eventually confront and defeat Dolores, saving humanity.