It's not quite a perfect drabble, but cutting out the extra 40 words took too much of the tone...
Andromeda has always been an interesting character; straddling the lines of the war in a way that Sirius can't. I wanted to explore how she felt about all her family, both sides of it, fightingin the battle. It also links nicely with Narcissa's focus being only on saving Draco.
Andromeda didn't fight at the Battle of Hogwarts.
Instead she stayed home and watched over Teddy. With both his parents insisting on fighting, and his godfather in the thick of it, someone had to.
Or that's what she told herself.
In truth, she was terrified that she would look down the length of her wand and see Narcissa at the end. Afraid that the body lying before her is that of her sister – always her sister despite being disowned. Afraid to face the last of her childhood family remaining – poor Bella was lost long ago.
So instead she watched over her new family. Guarding the grandson she cherishes, praying for her technicolour daughter and the wolf she chose.
And if a prayer slipped in for a certain blond-haired Black, she is the only one who needs to know.