Dear Subbuji,
Without casting any aspersion on the scholarship of Shri Dhanapati Suri, I would like to draw your attention to an episode, which says that when Mother Sita was abducted by Ravana, Shri Ram was distraught so much, that Mother Pravati wondered as to whether Shri Ram remembered or not that he was none but Lord Vishnu. So Mother Parvati disguised as Mother Sita and appeared before the bewailing and disconsolate Shri Ram. Shri Ram immediately recognized Mother Pravati and addressed her as Mother Parvati. I read this long ago and hope you too have read this and may remember the exact source.
In the later part of the episode, Lord Shiva told Mother Parvati that as she disguised as Mother Sita, she would have to take another birth (as Himalaya-putri), to come back to Lord Shiva as his wife,
Regards,
Sunil KB