It is grand Protection
Jadurani: Most of his lecture that night was about how all women should be married. “When I was a householder,” he said, “my friend had a daughter who he wanted to marry, but the girl said, ‘I am not going to be the slave of any man.'” Prabhupada said to her, “Marriage is not slavery for the woman, it is grand protection.” Then he said, “There is no necessity of the brahman’s thread for a woman because she has to follow her husband. If her husband is a brahman then she automatically becomes a brahman by following his vows. And if her husband is not a brahman, what is the use of her becoming a brahman?” Then Srila Prabhupada pointed to a painting that I did, which was on the wall to his left, of Sita, Rama, Hanuman, and Laksman.
Reference: Remembrances of Srila Prabhupada by Sidhanta das – Folio Vedabase