Who is Julie Devereaux from Straight Man and what is their importance?

Julie, Hank and Lily's daughter, is married to a man named Russell. She is very unlike her parents, though her like becomes a bit complicated when she and her husband have an argument the weekend her mother is away. Hank, who is already feeling pressured, is forced to step into his wife's role because she isn't there to help her daughter. Hank's family role has never been that of providing strength and guidance..... but he steps up to the task.