I still don’t get why he’d laugh there since he knows all too well the pain of abandonment. Emma’s whole world shattered to pieces when that cop was putting the cuffs on her, just like Neal in the portal, and Rumple in Neverland. He lived with his pain of abandonment for hundreds of years you think he’d show a better understanding of what Emma has had to go through her life dealing with. Instead he scoffs at her… and of course he had no problems slapping his father across the face with his same pain when he tried to reconcile with him then.