Avery thought then she got an idea. She said "I can come back when I'm not on a case...but your right, you shouldn't be alone" She hit her watch and Whix came up. "that's why I'm leaving Whix here with you. His safer here and you need the company when I'm gone." Whix blinked and said "Boss...are you sure?" Avery smield and said "Ya, Whix...you need someone who is happy all the time, and the Tardis is big enough for your whole program. And you can learn from both the doctor and the tardis...I don't see a downside"