chehar maa is an incarnation of maa chamunda. only the good karmas of the devotee make the mother to come upon in her form.
chehar maa is holding 52 brave men (called veer) and she always keep them with her. based on the need, she brings forth the veer as and when required.
chehar maa believes in the power of ?????????yantra??????. she becomes apparent quickly when called using a yantra.