Hi! Hope I'm not yet late about giving you advice on how to start tutoring an adult student to get him started for her TOEFL. I have been consistently teaching English as a Second Language(ESL) both man to man and Home-based online to Koreans for almost 5 years now, Taiwanese and also Kurdish as Home-based Online Tutor or Teacher for 3 years now. In my years of doing this it's very important that you do a simple "LEVEL TEST", basic questions would be to ask her to "Tell something about herself", that includes about her age, family, hobbies etc. Since you have been teaching you must take note there are different levels right? Beginner, Intermediate and Advance is the level in studying English. Since you said you need to tutor a student and adult in particular to get her ready for her TOEFL, I can say that her level is intermediate to pre advance. You see TOEFL is a very challenging subject to test your accuracy in English most especially your reading, listening, speaking and writing, so if she would want take up masters and go to the US or other countries it really requires you take up TOEFL test. Hope that helps you and good luck! Here is a link to help your student practice for the TOEFL test. http://www.examenglish.com/TOEFL/