[quote=@Crimson Flame]
https://megamitensei.fandom.com/wiki/Undine

Considering using Undine, but Undine is already part of The Lovers and Haruki is using that. :hmm
[/quote]

[quote=@stone]

Any personas that have already appeared in the series can totally be reused, and you can absolutely rewrite any existing persona/demon lore to fit your needs. If you're unsure about anything, just ask.

[/quote]

If another arcana could fit her, then you're free to use that instead! megami tensei wiki isn't canon in england