Cassidy was feeling pretty exhausted as he headed to his daughter's bedroom to kiss her goodnight after a long day.
After he returned from his trip to Heden to meet with Harry, he had deliberately stayed away from the house because he didn't want to face Andy.
She was leaving the next day, and seeing her was only going to make him reluctant about letting her go, and he didn't want that, especially now that she had forgiven him.
So he had waited until nighttime when he was certain she would be asleep to sneak back into the house. That way, the next morning she would leave and that would be it for them.
Cassidy smiled as he watched his little Angel sleeping peacefully, and after staring at her for some time, he kissed her forehead before walking out of her bedroom.