Nergal returns after she threatens to raise the dead and make them eat the living.  
In Sumerian myth, she is married to Gugalanna, the Bull of Heaven.  In Babylonian myth, she uses a foot bath to seduce her future consort.  After seven days of great sex, Nergal abandons her but she appeals to the heavens to return him.  Nergal returns after she threatens to raise the dead and make them eat the living.  FTP, name this goddess of the underworld and sister of Ishtar.
In Sumerian myth, she is married to Gugalanna, the Bull of Heaven.  
Ereshkigal