She IS human, all the people you see in Arknights ARE Humans Just with various races. Correct about the part that she is Sarkaz Race.
They're not literal humans; those, technically, don't exist in Arknights. The people of Terra use "human" to refer to people, but the lore correct term is Ancients. All of the animal operators evolved from regular animals, presumably some of which aren't present anymore(?), if statements made in certain operators' profiles are any indication. Where the non-animal people (Sarkaz, Sankta) came from is anyone's guess, though.
They're not literal humans; those, technically, don't exist in Arknights. The people of Terra use "human" to refer to people, but the lore correct term is Ancients. All of the animal operators evolved from regular animals, presumably some of which aren't present anymore(?), if statements made in certain operators' profiles are any indication. Where the non-animal people (Sarkaz, Sankta) came from is anyone's guess, though.
It's less than 'evolved from regular animals' and 'created a new humanity via gene engineering physical bodies out of existing animals and mind-transferring human consciousness in it'. As already hinted by Emperor, and High Priest, which existed since more than HUNDREDS of years ago, and are effectively immortal, one might want to point the real theorized backstory of Arknights are actually ALIEN LIFEFORM (originium) INVASION, which forces humanity who get infected to create new, more resistant vessels to transfer their minds to, which created the new races as we know it.
It's less than 'evolved from regular animals' and 'created a new humanity via gene engineering physical bodies out of existing animals and mind-transferring human consciousness in it'. As already hinted by Emperor, and High Priest, which existed since more than HUNDREDS of years ago, and are effectively immortal, one might want to point the real theorized backstory of Arknights are actually ALIEN LIFEFORM (originium) INVASION, which forces humanity who get infected to create new, more resistant vessels to transfer their minds to, which created the new races as we know it.
That's an odd theory, because it's also stated that Ancients are very susceptible to oripathy infection. If they were trying to make more resistant vessels, they didn't do a very good job of it.