Dammit, I have to get this out of my head, because otherwise I?m not going to get any work done this morning (what do mean, the morning is nearly over anyway?).
I have a sinking feeling (because I like Alex Kingston and think that there is great chemistry between her and DT) that Prof River Song is for the chop. As a Significant Female in the Doctor?s life, how can she not be?
However, if she is, then you could set up a great choice between her and Donna. At some point, if she and the Doctor agree that, when he meets her in the future, he ignores her and does not let their relationship develop, then she will not be able to summon him to the library, meaning Donna will not have to die. So, the Doctor has to choose: River Song or Donna? God, I can see that being a tear jerker (cf Human Nature)
Poor old Doctor, he really does get put through the wringer, doesn?t he?
Am also nearly convinced that The Girl is probably the library computer dreaming, possibly driven a bit mad by the 4022 (4023 counting Donna) identities it has had to absorb.
As an aside, I?m intrigued by this being the second paradox loop we?ve seen this series ? the Tardis was pulled to the planet in the Doctor?s Daughter by her existence, yet arrived too early, thus creating her ? and I?m wondering if this is a clue about something in the series finale?
(must...pull myself out...of speculation vortex.....)