As you married a man such as this, there is no doubt of attainment of Buddhahood by a woman. If this were a lie, Śākyamuni Buddha, the Buddha of Many Treasures, Buddhas in manifestation in all the worlds throughout the universe would be liars, and wicked. They would be people who would deceive all the people leading them into hell. Devadatta then would be the Lord of the Pure Land of Tranquil Light, and Śākyamuni Buddha would be choked by the flame in Avīci Hell. The sun and moon would fall to the ground, the great earth would be overturned, rivers would flow upside down, and Mt. Sumeru would be smashed into pieces.

If these actually happen, it is not due to my telling a lie; it is due to the lie of all the Buddhas throughout the universe in the past, present, and future existences. How can there be such a foolish thing?

Myōhō-ama Gozen Gohenji, A Reply to My Lady, the Nun Myōhō, Writings of Nichiren Shōnin, Faith and Practice, Volume 4, Page 143