A) If she's just starting with the 2005 season, no need to explain the future to her. She can encounter #10 on her own.

NO ONE counts "fake" Hartnell, or any of the other "non-cannon" actors that have appeared in other medias. The point is to keep it simple for her. When can shoot our fanboy juices over her once she's watched a few episodes.

C) Rex...you're fired...