Has she tried specifying the kind of English she wants? I find for translation, even just saying something like this gets good results: "Please translate this s

Has she tried specifying the kind of English she wants? I find for translation, even just saying something like this gets good results: "Please translate this so it sounds like a native speaker with an above-average vocabulary who is writing a business email to a colleague with whom she has a longstanding professional relationship. Do not make it sound too stilted or formal."