The closing refrain — — means: Salutations to Her, again and again, repeated salutations.
Yā Devī sarva-bhūteṣu buddhi-rūpeṇa saṁsthitā | Namastasyai namastasyai namastasyai namo namaḥ ||
"To the Goddess who resides in all beings in the form of [Attribute],"