I have really liked this final story arc with 6 and Charley, and this story neatly bookends both that story as well as Charley's story as a whole, I both found this final story a very interesting concept in itself and how it dealt with Charley's exit, and her feelings towards the Eighth Doctor felt very satisfying too. I still hate Meela though, I was hoping she'd get what she deserved for the last two stories, and I felt Charley was too nice for forgiving her in the end.