I am interested in your proofreading / editing project. I am not a content writer, so do not see that I would be providing content for your manuscript. That said, I have taught English as a second language, in addition to teaching English to native speakers, so I have some understanding of the general challenges ESOL teachers face, though not specifically those regarding Haitian immigrants. I have learned several languages as an adult, including Dutch (while living in the Netherlands) and New Zealand sign language, and I learnt German and French at high school. I have 12 years of proofreading / copy editing experience, which has included working on more than 100 books, both fiction and non-fiction. My usual rate is USD15 per 1,000 words.
I could also recommend another Freelancer, who has a degree in linguistics and media studies, six years of copy editing experience, has tutored university students in English papers, and has himself learnt a second language, Esperanto, in which he is now fluent.