Replies are closed for this discussion.
Let's not shove Moffat into a room with only two doors. He always seems to find a window or an attic nobody noticed. The choices that have been presented; The Doctor saves her thus ending/changing the timeline where she kills him (though we still don't know it was her to begin with). Second, he doesn't save her and she's raised by the headless monks to be a weapon against The Doctor.
Possible 'window' senarios:
Someone kidnaps her for their own benefit.
There is a war that is started when word gets out of a child with Timelord DNA.
The Headless monks and the priests have a falling out. The priests keep River.
The Headless monks and the priests have a falling out. The Headless monks keep river.
The Master returns and takes River himself.
And so on...