The Romantic angle seems made-up
I lived in Haiti off and on from 1987 till 1992 and never saw European or Black American or even high class Mulatto girls from Petionville hanging out with black thugs or Macoutes or slum warlords etc ...never ...no way.
Now either times have changed bigtime or they just threw this in there for the usual interracial/intercultural relationship effect though this really transcends that even as simply bad judgment.
An AID worker sleeping with local criminals would be grounds for her to be sent home.