Got that writerly itch, but...

I know I want to write something... I just don't know what. It's like an itch on my back I just can't quite reach.

Which is where my friends come in :-) I know at least three of you are familiar with my fictive friend Eloise... I'm thinking of writing a little Yuletide story (double drabble length, or so) featuring her... but what?

So here's a riddle for all of you: Which of the Doctor's eight regenerations do you think she met up with, and befriended, first?

Just wondering...