Thanks for finding the reference. I didn't think to look for her married female surname spelling. I believe her maiden name was really Vintartas and that the Vitartaite is a typo.
I spoke with Aldona in mid-2008 and she confirmed that she was the sister of Vytautas Vintartas. When I called her again in 2009, I found she had passed away in August 2009.
I don't know where the Labokas surname came from since she was married to Dr. Antanas Valis for 46 years (married on 16 July 1959 in Cook County, Illinois). That came from the 2005 obituary for Anthony Valis from a St. Petersburg newspaper.
Info on Anthony is:
Born - 14 March 1901
Died - 14 June 2005
What is interesting is the entry above Aldona which is:
LABOKAS Vaclovas (Valis; g. 1908.V.2 Ruigiuose, Veiviržėnų vls., Kretingos aps.), gydytojas.
Vaclovas is a male but yet another surname (Valis) is listed in the parenthesis. I'm guessing Vaclovas was Aldona's husband and thus the Labokiene surname.
I don't find an arrival entry as a DP for Aldona but she shows up twice (1953 & 1954) coming back on the SS United States sailing from Le Havre to NYC. She is listed both times as Aldona Vintartas.
Aldona's obituary lists a married daughter and I will try to make contact with her to see what she can tell me.
Hope you're doing well.