Response from the NARA office today:
"The National Archives is the repository of naturalization records for the Federal District and Circuit Courts. The indexes for the Federal Courts in the Middle District of PA were searched for the years 1901-1990. We found the naturalization record for Antoinette Piccione Orlando, naturalized in 1948. According to her papers, her husband was deceased by that time and had not been naturalized before his death."
In short, this all means that I still have the green light to go ahead with dual citizenship!
Let my work continue! And let's dance a little tarantella together in the meantime!!!!