Perhaps because of her background, your friend sees the 'stability' of a JW upbringing in a positive light. I also often find that people who 'take a walk on the wild side' often take to the ideal of a strict lifestyle later on in their lives. But they fail to see the destructive side to this sort of life - shunning, absurd standards, repression, etc. It's the other extreme. A middle-way of moderation is the best way, in my experience.
And after seeing what happens to JWs after they leave - disfellowshipping, broken families, etc. - I can see where resentment is justified. I think forums like this can be very cathartic, and part of the process of eventually moving on. I think the sort of reflection shown in your post is part of the process as well (seeing the big picture!).