I've been looking for a genderswap of the song for a long ass time, all the swaps just make the Phantom a lady and leave Christine a lady, so a lot of people feel the same as you as well.
(That said if you're going to gender swap one of the characters to make it Lez I think Raoul works better because then she's breaking away from torturous cishet society to embrace her true feelings, but the specter of her father always lingers...)
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Personally, I AM also obsessed with the idea of a Lesbian The Little Mermaid.
You can find The Song of the Bones (in Portuguese) here: https://a.co/d/cOgO5ao