I know that God is not really a male....nor is he really a female and that he has characteristics of both sexes.....which only makes sense since we came out of him and humankind is made up of two genders. I've read that the name for God, El Shaddai means breasted one. I read the following definition:
Meaning and Derivation: (from Blueletterbible.org) El is another name that is translated as "God" and can be used in conjunction with other words to designate various aspects of God's character. Another word much like Shaddai, and from which many believe it derived, is shad meaning "breast" in Hebrew (some other scholars believe that the name is derived from an Akkadian word Å adu, meaning "mountain," suggesting strength and power). This refers to God completely nourishing, satisfying, and supplying His people with all their needs as a mother would her child. Connected with the word for God, El, this denotes a God who freely gives nourishment and blessing, He is our sustainer.
Consider the following quote from a site that I found while internet researching the meaning of El Shaddai.
"In this chapter, we see Jacob giving last words to his sons. Beginning at verse 24.
24 But his bow abode in strength, and the arms of his hands were made strong by the hands of the mighty God (El) of Jacob; (from thence is the shepherd, the stone of Israel:)
25 Even by the God (El) of thy father, who shall help thee; and by the Almighty (Shaddai), who shall bless thee with blessings of heaven above, blessings of the deep that lieth under, blessings of the breasts, and of the womb:
The usage of the names here is obvious. It is God as El (Omnipotent, Almighty, All-Powerful) who helps in time of need, but God as Shaddai (All-Sufficient) who satisfies with abundant blessings "of the breasts and of the womb". This clearly indicates that the righteous and loving God Jehovah cares for us as a mother cares for a newborn child. Everything we could possibly need, exactly when we need it, God IS! "
So perhaps like God reveals himself to us in the way we can most relate to him. In the Shack (for Mack) he was a big, black woman. To some, perhaps as a mother...a "she" is the revelation that will most resonate with our hearts. But "everlasting Father" works best for me.....