I can see how people could get the idea of a mother in the Godhead-we have to look at the use of personification in the scriptures-wisdom is given the attributes of a person, even though wisdom is not a person- " She standeth in the top of high places...." Proverbs 8.
The Holy Spirit is the personification of God's power, love and wisdom.
Man and woman have a distinctive resemblance to God -face, arms, fingers etc as described in the Bible.His image.
Jesus had a physical mother, but a divine father.
Jesus came to reveal the Father to mankind and His relationship and position to the Father.
The God of the Old Testament, (Jesus) the word, always appeared as a man when materializing before people.
What sound scriptural evidence is there to show the deity consisting of a woman compared to the endless scriptures that glorify the Father and Son?
God is a family, consisting of the Father and the Son, distinct persons, while the Holy Spirit is the power and influence of God in our natural world.
Gender is applied here by shape and form similar to the way God has described and presented Himself