SrI DevI notices the faults of the devotees but forgives them.
BhU DevI conceals the faults of the devotees from the eyes of BhagavAn.
NILA DevI who is none other than SrI RAdhA considers even the faults of the devotees as good through Her ceaseless and causeless mercy, transforms them and facilitates the company and grace of SrI KrishNa.