It is okay to want to keep some things private
August is an adult and is visiting her mother to have a chat.
August wants to have a good conversation with her mother.
August's mom prods her about her dating life but August doesn't want to discuss the subject in detail with her mother, so she changes the subject to keep things light.
August talks openly with her mother about everything going on in her romantic life because she thinks it is interesting.
August's mother picks up on the cue and has a good time with her daughter discussing other topics.
August's mother thinks August is over sharing and feels uncomfortable.