She is not only the Supreme Self but even more so the Consciousness and Power of the Supreme Self. Without Her, the Supreme Self would not know Itself as the Supreme. Without Her, the Supreme Self would remain unmanifest as the Being of Sacchidananda. Here is what Sri Aurobindo reveals to us in The Mother about the inmost truth of who She is in her present incarnation.
‘The one original transcendent Shakti, the Mother stands above all the worlds and bears in her eternal consciousness the Supreme Divine. Alone, she harbours the absolute Power and the ineffable Presence; containing or calling the Truths that have to be manifested, she brings them down from the Mystery in which they were hidden into the light of her infinite consciousness and gives them a form of force in her omnipotent power and her boundless life and a body in the universe. The Supreme is manifest in her for ever as the everlasting Sachchidananda, manifested through her in the worlds as the one and dual consciousness of Ishwara-Shakti and the dual principle of Purusha-Prakriti, embodied by her in the Worlds and the Planes and the Gods and their Energies and figured because of her as all that is in the known worlds and in unknown others. All is her play with the Supreme; all is her manifestation of the mysteries of the Eternal, the miracles of the Infinite. All is she, for all are parcel and portion of the divine Conscious-Force. Nothing can be here or elsewhere but what she decides and the Supreme sanctions; nothing can take shape except what she moved by the Supreme perceives and forms after casting it into seed in her creating Ananda.
The Mahashakti, the universal Mother, works out whatever is transmitted by her transcendent consciousness from the Supreme and enters into the worlds that she has made; her presence fills and supports them with the divine spirit and the divine all-sustaining force and delight without which they could not exist. That which we call Nature or Prakriti is only her most outward executive aspect; she marshals and arranges the harmony of her forces and processes, impels the operations of Nature and moves among them secret or manifest in all that can be seen or experienced or put into motion of life. Each of the worlds is nothing but one play of the Mahashakti of that system of worlds or universe, who is there as the cosmic Soul and Personality of the transcendent Mother. Each is something that she has seen in her vision, gathered into her heart of beauty and power and created in her Ananda.’
(Ref. https://incarnateword.in/cwsa/32/the-mother-vi#p5)
Affectionately,
Alok Da
