Linkle is a female version of Link created for Hyrule Warriors and a modder recently created a playable model of her for use in Breath of the Wild.
You can check out the video showcasing Linkle below, which even integrates her voice into the mod.
(Please visit the site to view this media)
Fans (and I would count myself as one of those) have long-requested a female protagonist for the Zelda series, or the opportunity to play as Zelda, and until Nintendo releases that game (which I hope happens in the future) this cool mod will have to do.
[Source: Dario Rolle on YouTube]