Thank you for coming back with some more information.
You need to confirm the "my family said she was born in Mun, Ava Yugoslavia.
Have you found this location? Is it in present Serbia? If yes, than you should put a query on Serbia's board.
Your grandfather, Samuel was born in USA? If yes, do you have his church baptismal record? Should the record not contain his mother's place of birth as well as father's?
Which state? Did you go back on your posting history? Anything in those posts?https://www.ancestry.com/boards/localities.eeurope.yugoslavi...
I don't suppose this is your Cvjeta?
Klipa, Czvieta Topovicbido 3 1897-1898 1901
surname as a first name:
Mile, Klipa Jesenica 19 1885-1886 1905
Milovan, Klipa Josipdol, Slovenia 39 1883-1884 1923
I went back on your posting history to re read your query. You are saying that Cvjeta KLIPA married Steve DOBRIC who changed his surname to DOBLICK were married in "old country" as that is where the twins were born and died. So Cvjeta would come to America under her husband's name and not her maiden name.
Your ancestor Stjepan DOBRIC. This manifest was provided last year by Robert JERIN.
Name Stjepan Dobric
Event Type Immigration
Event Date 01 Apr 1906
Event Place Ellis Island, New York City, New York, United States
Residence Place Austria
Marital Status Single
Nationality Austria, Croatian
Birth Year 1881
Departure Port Southampton
Ship Name Saint Louis
Arrival Contact Name Pera Dobrice
Arrival Contact Name Relationship Brother
Page Number 97
Affiliate Line Number 0001