Because her father is Haitian? I know they can be pretty racist towards other races, so I would agree there would be some of that.
I worked for a guy who in a previous job had worked for years in Japan, was fluent in the language and understood the culture pretty well.
He went to a Japanese professional baseball game, and sitting in the stands right behind him were two Japanese men who were saying really rude things about him as if he wasn’t even there.
He was what I think would be a typical “Gaijin” in the Japanese culture, big guy with bright blue eyes and black hair.
He concluded they were speaking that way because they assumed he didn’t know Japanese, and he turned to face them and said in fluent, unaccented Japanese in his politest voice:
I am sorry my presence here is causing you so much difficulty. I would be more than happy to find another seat so you can better enjoy the game.”
He said they were so ashamed and horrified that they instantly got up and left!
She really needs to get to know her heritage by going to Haiti and living there full time.