In a flashback, Nolan showed Caitlin a picture of her senator mother having an affair on her wife with an unknown man. Due to her striving to be President one day, Caitlin was forced to keep her mothers' secret.
She comes to Beacon to check on her daughter after finding out about her accident. She confirms that she had an affair to her daughter and asks her to keep it from her mother, also because she's running for governor and can't afford the scandal.
She appears again for Claire's gala and discovers Ava's embezzled money in her daughter flat. When Caitlin refuses to explain, she decides to move her to Georgetown as she feels she's become distracted at BHU.
Still wanting her daughter to move to Georgetown, she threatens to cut her off if she decides to remain at BHU believing she'll agree to her terms. Eventually, the senator relents on Caitlin promising to get right this time while also saying she'll be keeping an eye on her.