Originally Posted by abigailsmum:
“hmmm...sorry, but if I have a 3 yr old who can speak limited Welsh (well, she is only 3) growing up in an English home (to the point we are doing some serious cramming), then Nancy, being born of an American speaking mother, can speak better English than she lets on....it's all an act...couldn't stand her”
As the mother of three bilingual children and an EFL teacher to boot, I'm really not sure about that, Abigail's Mum: Jane Birkin is a good example of the kind of thing you are suggesting - when interviewed by the French press she speaks French with a heavy, stereotypical English accent - but when she played the role of a French maid in one of the Agatha Christie films her French was flawless.
However, when la Birkin speaks French she is still intelligible. The Oily One is not intelligible in that interview - I've just watched it again and have come to the conclusion that the word she is mangling when she says "create the new loo" is actually "law".
I know women married to blokes who speak a different language to them whose offspring only speak the language of the country in which they live - as you have discovered, it depends on how much effort the parents make... Wikipedia says her mother was born in the USA but English may not have been her first language, and the family moved to Italy when Nancy was five - my friend who lived in Italy until he was five has no memory of the language as an adult!
Wikipedia also says she is in a relationship with Sir Trevor Nunn: maybe he could give her elocution lessons?