All prompts are free real estate aren't they ;) Also, this definitely fits, though not in the way I had imagined, lol.
It is amazing! I love the au aspect of it: Lucy being pulled to the Sea, the Witch conquering the lone islands and making it rain, and I thought the sea girl was a perfect addition! (though I do find it funny to compare her to Mr. Tumnus, lol) I also really liked the kiss to give her gills, and I loved how you described Lucy's reaction to that. In general I though Lucy's voice was really great in this!
Re: *shovels Lucy/Sea Girl into this AU before someone can stop me* so, this got away from me a bit.
It is amazing! I love the au aspect of it: Lucy being pulled to the Sea, the Witch conquering the lone islands and making it rain, and I thought the sea girl was a perfect addition! (though I do find it funny to compare her to Mr. Tumnus, lol) I also really liked the kiss to give her gills, and I loved how you described Lucy's reaction to that. In general I though Lucy's voice was really great in this!