You need a place of birth for your ancestor to proceed with the research.
40 KARBANs and over 200 LISAs came thru Ellis Island.www.ellisislandrecords.org www.surnamenavigator.org
A map of Austria :http://users.erols.com/mwhite28/austhung.htm
What language did your ancestor speak? Did she have social security numbers? http://ssdi.rootsweb.com
Was she naturalized citizen?