BekkiG74, I'm newer to this than you because I didn't know about the LCHF diet until a little more than 3 weeks ago. I'm feeling increasingly comfortable with the diet and do see myself as maintaining it for life. Today is day 22, yet I'm still trying to figure out the nuances of the diet. For example, figuring out my daily salt intake and whether I should have salt once or twice a day has been a bit of a challenge, but I'm trying something new today, so hope to have this sorted out soon.
My husband who is overweight but has never had his blood glucose checked decided to join me on the diet yesterday. I'm a bit nervous about this because I don't feel I know enough yet to appropriately support him. Thankfully, he's reading Gary Taube's book, Why We Are Fat: And What to Do About It. That will help, because he reviews and explains the science behind the Atkin's diet. Perhaps it's for this reason that I think it might be better if you go on the diet first for a couple of weeks so you can bring that experience to supporting your daughter (though it will likely be easier for you as a non-diabetic).
There are three books that I am in the process of reading that have been the most helpful to me for differing reasons:
Diet 101: The Truth About Low Carb Diets: What Science Can Tell Us About the Strengths and Weaknesses of the Controvercial Diet that Controls Blood Sugar: The Facts You Need to Customize Your Diet for Lifelong Success (2012) by Jenny Ruhl - I really wish I'd read this book first, and I encourage you to consider doing so as well. She writes in the Introduction "...I remembered that after I had spent a year on my first very low carb diet in 1998, I, too, had run into the same problems that derail the majority of those who attempt to follow these diets - even though I'd read all the best selling books." She also reports that most people give up on the diet within a few months. I don't think I could do this diet without my books and the ongoing support I receive here. The chapters at the end of the book, beginning with Chapter 9 will help you make adjustments as you go. I'm finding this book to be very readable with lots of relevant information gleaned from her reading a lot of research studies. Jenny has Type 2 diabetes.
Dr. Bernstein's Diet Solution: The Complete Guide to Achieving Normal Blood Sugars (2011) by Richard K. Bernstein, M.D. - This book is the classic and where I started. It includes lists of which foods to eat and which to avoid initially to begin learning what foods work best for you. I appreciate the books organization and content. Lots of information here too on how to get started, and how to handle problems, particularly for Type 1's, but just as good for Type 2's. Dr. Bernstein has Type 1 diabetes.
The Art and Science of Low Carbohydrate Living: An Expert Guide to Making the Life-Saving Benefits of Carbohydrate Restriction Sustainable and Enjoyable (2011) by Jeff S. Volek, Ph.D. R.D. and Stephen D. Phinney, M.D., Ph.D. - Of the three books, the diet recommendations suggested in this book may be best suited to you because I don't believe either author has diabetes, though I heard Dr. Phinney state in an online interview on DietDoctor.com that he uses the diet to maintain normal blood pressure - (Dr. Volek also uses the diet). What I like about this book is that it's written from the perspective of researchers for medical doctors, but very readable. I'm already tabbing and highlighting answers to my questions. They also co-authored with Eric C. Westman, M.D. the book The New Atkins For A New You (2010) which I plan to order next.
As I muddle through this process, I've gotten great support here and lots of links to interesting lectures posted online. It also helped that I took time off from work to start the diet and make adjustments as I go. It appears that I have a high level of insulin resistance so getting my blood glucose down may take months rather than weeks.