All we know is that Isaiah calls her a prophet, she was his wife, they had sex and she gave birth to a son. Unlike the wife of Moses we do not know her name. She is not credited with any of the prophecies in Isaiah. Her entire story is Isaiah 8:3.
The Prophet Uses Female Imagery
Is it possible that there are hints of her prophesies in the book of Isaiah? In Isaiah 42:14b the prophet credits God with saying, "now I will cry out like a woman in labor, I will gasp and pant." In 49:15 God is represented as a nursing mother. "Can a woman forget her nursing child, or show no compassion for the child of her womb?" In 66:7-9 the image of a woman giving birth is used as a metaphor for Zion and God is personified as the mid-wife. In 66:13 God is said to compare God's self to a comforting mother.
Prophecies of the Woman Prophet
Is it possible that the prophecies in Isaiah, which use female experience are the words of the voiceless, woman prophet?