I used these links but I couldn't figure out what she did at European Union because as far as I know, European Union has no President. How can there be a vice president.
http://www.huffingtonpost.com/author/frances-g-burwell-phd http://www.atlanticcouncil.org/about/experts/list/frances-g-burwell https://en.wikipedia.org/wiki/President_of_the_European_Union
"It's going to be tough for the British. I think that they're going to find that it's very difficult to achieve what they want and to not be part of the single market," said Burwell, vice president, European Union, at the Atlantic Council.
Source: http://www.cnbc.com/2017/03/29/heres-what-investors-should-expect-as-Brexit-begins-experts-say.html