Your Advice Needed!!

[JellyBean]

This is a vent as much as it is a request for advice. Please bear with me.....

I just got back from a lovely walk with my friend who is 27 weeks pregnant. She is (bless her) a lovely person, but one of those incredibly naive people who run off to the doctor over a spilled milk. Honestly, if a doctor told her to jump she would ask how high....
Anyways, so I asked her "when is your estimated due date again?" (Emphasis on the estimate). Turns out it was a week or 2 earlier than the original date she was given (which I advised her to stick with in order to prevent pressure to induce). Anyways... I just casually said its better not to expect the baby to come on your EDD, more 1# pregnancies go to 41 weeks than 40 weeks.. blah, blah.
Then she wops out this cracker, "Oh, my Ob says he will only let me go to 41 weeks - thats his absolute limit."
I was so shocked/angry etc etc that I couldn't respond. I am sort of regretting that now. However I think that if i did that it would probably have come out angily, or upset, which i wouldn't have wanted either.
So basically, I am asking, what should I do or say to her, if anything? Do I have a responsibility, being the informed health critic that I am, to gently advise her on the risks of induction and encourage her to do some research/offer her some articles/books to read?
I don't want to come across as pushy, and I respect her right to make her own decisons, but the poor thing is SO uninformed, she seriously treats anything a person in a white coat says as gospel......and i'd really hate to see a friend of mine become another victim of the system. To top it off, her baby is measuring small for her dates - another sign that her EDD is innaccurate (as they often are) and I fear its likely that an induction (which she would naively do at 40 weeks or earlier if her Ob suggested it) will lead to a distressed baby and C-section.
If it were her last baby - then yeah, so what. But its her first - and she has no idea about uterine rupture or any of those risks in subsequent pregnancies.
I am really worked up about this now - it just annoys me how naive and innocent people are so easily taken advantage of. But then part of me is saying to let it go - its not my baby etc - but I just cant help this feeling. I guess it would be easier if it were not my friend. I am really worried for the baby more than anything - i just don't think its a fair way to come into the world when everything is normal - why complicate things?
Have any of you been in this situation?
What do you advise??????