@nachtness
You make it sound like she left after a single time. He drove her away from him on purpose. Eventually she had to give up. It was 100% his fault.
@Croix I don't think this fantasy world has their roles assigned the way you're thinking. She has the skills you would expect for a Priest, but it seems their skills can be pretty varied so that if she had other skills good for combat she could easily take up the role of Tank if that's what she wants to identify as. Their skills seem kind of open for interchangeable roles. Seems pretty cool.