The Legends of Ashildr (anthology)

The Legends of Ashildr was a collection of short stories set during Ashildr's journeys between The Girl Who Died and The Woman Who Lived.

Publisher's summary
Ashildr, a young Viking girl, died helping the Doctor and Clara to save the village she loved. And for her heroism, the Doctor used alien technology to bring her back to life. Ashildr is now immortal – The Woman Who Lived.

Since that day, Ashildr has kept journals to chronicle her extraordinary life. The Legends of Ashildr is a glimpse of some of those stories: the terrors she has faced, the battles she has won, and the treasures she has found.

These are tales of a woman who lived longer than she should ever have lived – and lost more than she can even remember.