Deanna now appears to live a similar life to that of Daniel Mockridge in the Batman: The Animated Series episode "If You're So Smart, Why Aren't You Rich?". While both became wealthy at the expense of the central villain, they would live in constant fear of their enemy returning to carry out revenge.
Batman (Terry) reminds Inque the last time he saw her she was washed away in a storm referring to Disappearing Inque (1999).
Batman had new circuitry installed on his suit that discharges electricity to prevent her from smothering him, as she attempted to do in both "Black Out" and "Disappearing Inque".
Deanna Clay's last name is appropriate, since Inque's abilities strongly resemble those of original Batman rogue Clayface.
After being frozen by Batman, Inque manages to break free and then claims she has learned from their previous encounters. This refers to the episode "Black Out" in which Batman froze her with Mr. Freeze's gun.