I wonder if what happened in her past life effected the roles of the saintesses.
Like, Did the preconceived bias of the former heros that abandoned her 300 years ago determine the job class? Or was it a result of her dying and being left behind that resulted in the saintesses being in this permanently protected state? OR were other healers always like this even 300 years ago, which led to the heros initial bias and mistreatment of the grand saintess in the first place?