While my old pfp on a lot of places was a witch, Marin is very much not. They're actually completely magically inert.
This is to such a degree that essentially a vacuum of magic forms around them causing wild magic to flow in. This means that although maring is incapable of ever practicing as a witch or mage, she is constantly being subjected to magical experiences.
This is part of why the 2 games I've made that feature them take place.