Responses
I’d guess a saintess - as you said she’s not detected ?
Probably saintess, especially because in this chapter they hinted at witches and saintesses being quite similar and easy to confuse with each other. It's just a matter of when and how Kate will figure it out.
I like it so far, still not completely sure on whats going on but with a few more chapters I think this will be solid. Its building up to something BUT IDKW WHAT. Also, is she a witch or saintess? Since that magic detector for witches didnt catch her