Once a novel gets going and I know it is viable, I don't then worry about plot or themes. These things will come in almost automatically because the characters are now pulling the story.
“I knew we were going to marry someday, but I was absolutely surprised when he actually proposed. And surprised he had bought a ring. I ran around the yard screaming.”
“Your English style will no doubt put all the other gentlemen to bed. I speak figuratively, of course.”