Jane didn't need sanctity as much as she needed people who could understand freedom and fight for it. Because in the era she lived in, human freedom, especially that of women, was restricted, and the mind was deprived of imagination and the spirit was deprived of revolution. So Jane had to conflict with the church and the powerful men of the French and English. She was accused of heresy and there were several attempts to convert her, but for being expelled from the mercy of the church which represents the mercy of God on earth. Their mercy was ignorance and hypocrisy.
Who is the church to give and withhold the mercy of God from His servants?!
And because in that era it carried so much intellectual rigidity, greed, and political strife, it was difficult for people in it to understand the wonder of Jane and that it was not just simple disbelief but rather came from a pure heart, a strong will, and a belief in the truth. So Jane's voices were not the voices of devils but the voice of a free mind and a free will that broke all the bonds and unfurled the banner for the spirit in it to soar in the kingdom of truth, love, and freedom.