This woman found the fountain of youth.
"Very, very interestingly, Steven has told Alex Kingston, who plays River, everything. Everything, about the whole story, about the whole arc, about where it’s all going, because her character is meant to know because she’s from the Doctor’s future. But told me nothing. So Alex knows. Which is infuriating." -Matt Smith. So she IS River...
Do you think there’s a possibility of River Song meeting Capaldi’s Twelfth Doctor?“ “All I can say is spoilers. But I will say the sonic screwdriver that I had in Silence of the Library, which had been given to me by the Doctor, is not a sonic screwdriver that has been seen yet.