Thanks a lot apzonerunner, Mclem and tregard! Great lists! Will post more when I'm at my computer rather than my phone but really wanted to say thanks asap!
She's pretty used to the idea of the Dr and the companions changing which is great because it means I can throw in the real stand out episodes without any worries it will be jarring but it does mean she won't have the loyalty to any particular Dr/ companion which may weaken the impact of some episodes
Some great ideas for episodes to throw on - would people recommend the episode where the Angels send the ponds back in time? I notice it's absent from people's lists but I remember it being a fantastic episode