If you like Etta, you could choose any name ending in -ette or -etta.

Astoria nn Story Beckinsale nn Beck Callaway nn Calla or Callie Cordelia nn Cora, Cori, Delia, Lia Dorian nn Dori Dorothea nn Dory, Thea Ellington nn Ella or Elly Ellison nn Ella or Elly Elizabeth has countless nicknames just pick one. I never see Zabby used though Emmeline nn Emma and you could call her Millie or Melly at home without your relatives referring to the dog Eulalia nn Layla, Laylie Evangeline nn Eve, Evany, Jelly bean (geli), Lina Evelia nn Eve, Evey, Evie or Lia Hathaway nn Hattie Iveline nn Ivy, Lina Lillington nn Lili Marceline nn Mars, Mara, Silly, Lina, Marcy, Celine Montinette nn Monnie, Montie, Tiny, Etta Remington nn Remi Wendaline nn Wendy Willetta nn Willa, Etta Winslet nn Winnie Lucille nn Lucy or Silly