I am Oswin Oswald. I fought the Daleks and I am human. Remember me. Run!
Hi, drabble idea: the Doctor goes back to save Oswin after he realises she was an echo of Clara and 'saves' her to the library (like he did with River). Bonus if he sends her a message through the library data core (you can pick) along the lines of 'run you clever girl, I remember you'.