In fact, as Sitchin suggested, the very term for mother, namely /mama/, which is used now universally to refer to motherhood, was indeed derived from Sumerian forms: the main goddess, Ninhursag/ Ninharsag, is also known as Ninmah (nin = "lady"; mah = "great," "big," "mighty") and as Mami (mah + mi) or Mamu (mah + mu, the latter word meaning also "woman," cf.
Carlos Benito suggested that, similar to the myth "Enki and Ninmah," where Ninmah was unsuccessful at proving herself an equal to Enki, here in EWO where Inanna attempts to gain "more prerogatives for herself than she had already obtained from the superior gods, ...
Benito, "'Enki and Ninmah' and 'Enki and the World Order'" (Ph.D.