Legend of Zelda: Two Souls, One Body

This is a role-swap AU of the Legend of Zelda, also where Sheik is his own character. This is also going to be a mash-up of different Legend of Zelda games. Also Zelink and Link x Sheik will be involved so viewer warning if you don't support ships.
The hero Zelda is a girl who was born and raised on Lon Lon Ranch, but she is not just any ordinary girl from humble beginnings. She discovered two things about her that's not normal: One, she discovers at the age of 12 she can do magic, and Two, she lives with a spirit in her body.
The spirit is a reincarnation of a Sheikah named Sheik, and he wishes to have his own body. Despite having a roommate in her body since birth, Zelda accepts Sheik as a brother and wants to help him find a body of his own.
All seems peaceful in Hyrule and Zelda & Sheik were ready to set off to Kakariko Village until they are delayed by a special order from the castle. The Prince of Hyrule himself wishes a delivery of the best horse Lon Lon Ranch has raised, and Zelda happens to be the fastest delivery girl the Ranch has to offer. So for the best service and quick delivery Zelda has to take the job, even if Sheik isn't having it. But there's another reason why she wanted to take the job, there's something call her to the castle and she really wants to meet the Prince, but why?
And so begins our journey with our new heroine whose destiny is twisted with someone else's, and the world overlaps on itself, with something different.