Mother of Mothra
Mother of Mothra by SkilledWarriorKiwi (AO3; part of a series, but can be read standalone - 3,700 words)
Fandom: A Song of Ice and Fire/Godzilla
Relationships: none
Summary:
They never saw me for a queen, she thought bitterly. I was only an afternoon's amusement for them to stare at, a horse girl with a curious pet. More interested in the grub at her side, Mothra now bigger than a stallion but she was still a passing fancy. 'A maggot mother,' one of the Thirteen had even jeered at her, when she asked for his aid to Westeros. She ignored it, well used to the stupidity of men. Let them look upon her and think her foolish, they all seemed to forget they only existed due to a mother.
Notes: this entire series (where Dany is accompanied not by her three dragons, but by a series of kaiju) is great, but this was my favorite. Mothra! Friend to all mankind!