I'm sure she could do a CELTA - face-to-face is best. The passport is no problem, as far as CELTA is concerned; she'd need a student visa, that's all, if she studied in England. Google for Cactus - a reputable web-based business that arranges all sorts of CELTA courses, all over the world. Many non-native speakers of English make great ELT teachers.
- For Teachers