Betty's darkness will continue to haunt her
In the season finale, Betty visited her father to shut him out of her life and, more importantly, to swear off her own darkness. The former sounded dramatic, but the latter should prove to be a loftier goal; it felt like the kind of abstract pronouncement one makes to feel better rather than to take steps toward accomplishing something concrete. (Which makes sense, as, in that regard, she's mostly her own worst enemy.) "I will always be with you," Hal warns at the end of their visit. Not physically, necessarily, but surely within the traces of her own darkness -- that idea, which the show has already toyed with, about inheriting the demons of your parents.
"I think that will always be a part of her character," Aguirre-Sacasa told THR, when asked about the topic. "With the darkness, either Betty was denying it, or it was controlling her. There was a struggle to understand it. I think that will continue. Again, rather than do another season of Betty struggling with her darkness, she's dealing with it another way or turning away from it or controlling it. Lili is such a wonderful actress that you, of course, want to give dark, dramatic material to. But I was so happy to see her in the finale smiling in the hotel room and walk away from the darkness that I don't want to deny that part of her as well."