Sisters do not get paid.
The Religious life is a state in which the faithful, over and beyond the observance of the Commandments, seek to consecrate themselves without reserve to God by the observance of the evangelical counsels. In making the vows of poverty, chastity, and obedience, a religious removes the three great obstacles to union with Almighty God. By the vow of poverty she relinquishes the goods of the world. By the vow of chastity she gives up the goods of the flesh. And by the vow of obedience, she gives up what is more dear than all else, her very self, her own will and judgment.
After this separation, the religious soul is set free from all earthly attachments and takes its flight toward God to find its rest in Him alone. But this a work is not accomplished overnight. Rather it is the result of concentrated effort and ceaseless prayer during the six years given over to a Sisters' formation.