During my study of "Shree Brahma-Vaivarta" Purana I have omitted Prakriti Khanda, reckoning It to be non-Vaishnava.
But reading the remarks to "Shree Narada Purana", I have encountered the following statement about The Mantra of Shreemati Radhika Ishvari:
And the following excerpt is dedicated to Shree Vrindavan.