Carly's Father is the type to feign innocence after being faced with confrontation. In this particular scene of the game, he engages with his wife after a long day out.

His outward attitude is desperate and clingy, but internally he has since moved on emotionally and is largely detached from his home environment (knew his wife would eventually confront him). 

Feel free to get creative with his delivery/style and tone, wavering from pleading, to sarcastic, to mockery to desperation (tries to maintain an act, but his facade falls through).