The only refrence of Kumbhakarna's wife I found is in Uttarkanda;
“There, with their consent, he chose two wives for his two brothers; the daughter of Virocana, named Vajravala, was given by him to Kumbhakama, and Bibishana received as wife the virtuous Sarama, the daughter of the King of the Gandharvas, the magnanimous Shailusha, and she had been born on the shores of the Lake Manasa.
In Shiva Purana, Kumbhakarna had sex with one more women called Karkati, and they had a child Bhima.
- Your father was Kumbhakarṇa the younger brother of Rāvaṇa. That powerful demon was killed by Rāma along with his brother.
- Once that powerful demon Kumbhakarṇa had been here. He caught me forcefully and enjoyed me.
- That powerful demon left me here itself and returned to Laṅkā. That Laṅkā was not visited by me. I have been staying here alone.