Alright.. I've got some questions.)) obviously my reply would be something along the lines of him leaving after saying goodbye to just Emily, something emotional, blah, blah, blah, and I can write it if you want in another reply;))
So. Is he going to pick up little Emily first, or Felicity in modern times? I know it would make sence if he just simply picks up future Felicity without going back, but then Emily could never have been born since he didn't see past Felicity ever again. Is he simply going to just go back to the modern days and not mention anything about them having a child, and make sure she doesn't have one / they don't have one or is he actually going to go back and grab Emily? I'm just frightened he wouldn't know what to do with Emily after an adventure or two. ))
I write all that for nothing because I had an idea. What if the reason Felicity leaves the Doctor is because she knows / the doctor tells her that it'll create a paradox of sorts when Emily is born and she is still traveling with the Doc? Maybe the Doctor drops her ( sad as it is ) off at her house, maybe he gave it to her, and tells her that she has so-and-so amount of years to care for her before she picks her up and sees her agin?))

