Came back to respond...I am going to take your advice ( as some of you pointed out, I really should have known the answer to this one) and just keep being unavailable. I probably should own up that, although Rowena IS from Eastern Europe, I did change her nationality from the one to the other.
However, I will say that I have several Polish friends myself, and while most of them assure me that the described behavior is just NOT what is done in any Eastern European country, I do have one acquaintance (who had come to the US a few years earlier) who ALSO thought it was amusing to be "continental." If we went for a walk, she had to hold hands with one or all of us and snuggle her head on our shoulders...and was distressed when we pulled away. She complained that Americans are so uptight and Europeans more open and accepting of their bodies. Uh--what?
Or--my favorite--she grabbed at the blouse of ANOTHER Polish acquaintance who was well endowed and said "I am curious: WHAT do you keep in there?"
Other Polish acquaintance assured her there was nothing interesting in there (a) and (b) if she ever pulled a stunt like that again, she would get hurt.
We chalked it up less to her being "culturally" inept and more to being, well, nuts. (Later on she pulled some other stunts that only added to the whackness theory) So it was more "Oh, that's how Betsy is, but trust us, it's NOT cultural or even continental."
Rowena's behavior was so much like Betsy's (except that one could understand Betsy when she talked) I decided to go with "Polish"--sorry Polish e-hellions, I wasn't picking on you!
P.S.: My immediate supervisor just asked me if I had seen Rowena lately and "does she speak English any better?"