She became a ghost when he became headmaster.

Life and love are hard, and when put together they can become inseparable, until one is forced to be without the other. Minerva McGonagall unexpectedly falls in love and suffers the unexpected consequences. MM/Doug MM/TR Darkfic. AU. Pottermore spoilers.

An anonymous member of the DA recounts their role during the 97-98 Hogwarts year. The return of the Army; a teacher's rebellion; freedom fighting with Harry Potter. One-shot.

"The castle's empty save for every covered statue and me." Three chapters describing the razing of Minerva McGonagall's heart from the time of Albus Dumbledore's death to the end of the war. Some SSMM nudges, if you're into that sort of thing.