It means that All is the Divine Mother. The forms She has built by HER power of limiting Maya are Herself in disguise. The power that moves these forms as Prakriti is also HERSELF limited to the needs of the particular form. And finally the power that can release, liberate the limited finite consciousness (within the form) into its origin, that is infinity, the Shakti is also HERSELF. As long as we remain tied to the limits of the form and its nature we are in ignorance. But a time comes when SHE opens the door and helps us realise that we too are not separate from HER, but parts and parcel of HER being portions of HERSELF.
Affectionately,
Alok Da