Wholly uncomfortable, if Tony's exit wasn't a cue to take his leave, Wanda's clinging to her brother certainly was. At the moment it looked like no one else existed in the world to the twins, and with the fear Wanda had shown towards him, Nick was glad to leave them that way. If she needed him, she could call. He would be there in a heartbeat. But not until she asked. Not with that terror in her gaze. Bowing his head for a moment and reaching out to give Cap a tap on the shoulder in goodbye, Nick followed Stark's leave and departed.