Most people see life the way they want to see it.....It's easy to look in from the outside and have opinions on how others should do things....I find myself guilty of it all the time.....
I did not want to breastfeed for multiple reasons.......I got really agitated with friends who put their two cents in, because it was my baby, my body, my decision.....My daughter is perfectly healthy, smart and developing just fine.....I know I made the right decision for us, though I still hear all the "Breast is Best" arguments when people ask my thoughts.....I would have loved to have that choice to make, but again, multiple reasons that I knew from the start it was a no go.
As far as the C-section, many doctors (at least REALLY GOOD ones) will not allow a woman to just tell them that she wants a C-section and that is that......Most will attempt a vaginal delivery and if complications arise a C-section will be performed. It shouldn't be something she can request. I will admit that when pregnant, I did make a comment or two about C-sections because I was scared about the vaginal delivery and I was really scared about having a baby that was too large for me to deliver...I am really tiny and was told my baby wouldn't be over 6 lbs because that's about all I would be able to handle being my size. She was 7 lbs 7 oz and born vaginally with no issues. Your mind races with all the differing scenarios and it is easy to think that cutting the baby out would be easier than pushing it out...She may be scared/nervous and trying to deflect by making such comments so she doesn't have to think about it. It's a natural thing to freak out at the thought of this large object shoving itself through a really small hole!
I think being supportive and allowing her to be herself and voice her feelings is the best way to approach this.....Often people just want to say it and aren't really looking for a judgement or opinion in return......Be there and offer encouragement by telling her that she can do this and that she is going to be a great mom and offer a tip here or there for her....
Parenting and mothering is a journey that we really have to figure out for ourselves...No book, scientific data, doctor, psychologist, friend, teacher, etc. can tell us how to do it because EVERYONE is different and EVERY child is different......There are no instructions because they couldn't possibly detail every moment for every person. This is her journey and it will be different from yours and she will do things you may or not like just like you will do things she may or may not like....The point is to allow each other to grow into your roles by being the supportive friends you always have been, whether you agree with everything she does or not.....
As far as her boyfriend...that's her struggle to face, just like you had yours....be there, advise when she wants it, listen and catch her if she falls.....You cannot save people from life (especially relationships/love) because it is a process we all have to experience......
Good luck to you both! Enjoy your journeys with all the ups and downs!