I don't know if I would say ignorance is bliss for me, I needed some information to work from but I didn't want to be drowning in information either.

I wouldn't assume just because she is using the services of an ob who she trusts she is not informed or going to be taken advantage of. I found that through choosing an ob I could 'hand pick' some one who had similar views to me and who I could talk to and work with. I always felt very comfortable with the decisions my ob and I made together. No my labour didn't happen quite how I would have chosen but that wasn't because I was using an ob, it was a because my body was developing PE and that meant my ob and I had some different decisions to make together.

At the end of the day your collegue could do all the research in the world, be wonderfully well informed and still chose a labour that is influenced by medical interventions, because that is what is OK for her. It isn't what I would choose, it isn't what you would choose, but some people are absolutely fine with that type of birth experience.