There are several female Deities that can lay claim to the title Christian goddess. Mary, the Mother of Jesus/Yeshua, first comes to mind. There is Mary Magdalene the "Goddess in the Gospels" the Church refused to acknowledge as the wife of Yeshua
could use the Strength Tarot card as the base for a tattoo. maybe incorporate bear/wolf instead of lion? I like the woman riding the lion & the sun & moon. Come on out sun before I pull your yellow cowardice ass out the sky now!