If there is any ambiguity about who the singular "they" is referring to, that should be clarified. If "you" would have been used by a person if they were addressing the Haitian-Creole speaker directly, that should be clarified. Confusion is potentially introduced when the person who needs to communicate with the Haitian-Creole speaker is referring to him or her in the 3rd person (while speaking to the interpreter rather than to the person he or she wants to communicate with). Clarifications should be requested as needed.