Need help with Austrian Nurse Daughter-in-law

Hi Everyone, I am the proud father-in-law of Bettina who is a citizen of Austria, grad of Austrian Nursing School with two years' experience in surgical intensive care nursing. She and my son are living in Maui, Hawaii, and she is starting her quest to get her RN license in Hawaii. I have made it my mission to help her get through "the gauntlet" of getting her license. I have done extensive research to this point & have obtained about 98% of the information she needs to start her quest. (i.e. CGFNS requirements, Hawaii Nursing Board reqs., NCLEX test stuff, etc.) I am stuck on one point which I can't seem to find an answer to, & I hope someone here on AllNurses.com can help us with.
A customer rep from CGFNS told me yesterday that Austria has a Nursing license or Certification board / bureau / or whatever (implying that Nurses get a license or certification beyond their graduation from Nursing school) BUT, Bettina (my daughter-in-law) tells me that they don't have anything like that in Austria. She only had to show her Diploma from her Nurse school to get a nursing position (which she did have for 2 years !) Can anyone tell me which is the case or where I can find out the answer??? I have scoured the net for 2 hours trying to find the answer without success.
Thanks for any help U can provide.

Best regards,
Nurse-Dad