Some names to call a Godmother would be Nana, Nina, Aunt (with her name after Aunt), and G-ma. Every family is different when it comes to naming the Godmother a name that she agrees with. Many times the Godchild will just call the Godparent by his or her first name. My Godparents were my grandparents so I just called them Grandmom and Grandpop. I hope this helps!