I have seen the pictures of her on television and yes she was very overweight. She looked like she was 200 pounds. And I would say this writer has a very valid point. The physical transformation was startling - without a doubt people told her she looked great. Having had an eating disorder myself, I know how addictive and motivating compliments about one's thin appearance can be.
Terri lost her weight over a number of years by using Nutrisystem. She lost her weight in an appropriate manner over an appropriate period of time. I also cannot imagine someone who successfully lost weight moving toward bulimia to solve her weight problems after marriage when she had previously experienced success doing it safely.