If you know her well enough to say something, and you want to give her some encouragement (privately), commend her for wanting to give her baby the benefits of breastmilk.
Acknowledge that we live in a society that sends mixed messages about breasts and breastfeeding (it's good for your baby, but don't do it too long or too publicly). Ask if she would be interested in talking over some of her reservations, or if she would be interested in a few resources about EPing (showing the challenges and also tips on how to give it the best chance of success). Maybe mention that you know a friend (find one on here or on Kellymom message boards if you don't have one in real life) who EP'ed (by necessity or choice...most do it out of necessity) and that there were a lot of challenges (keeping up supply, time commitment of washing parts and bottles, traveling with pumped milk) but that it was rewarding to at least be able to provide the baby with that healthy nourishment. Maybe offer to put her in contact with someone who successfully EP'd for at least a few months.
Perhaps if you approach it in a helpful, friendly way, she might be open to some info from you. Maybe if you are able to pass on info about EPing it will open her eyes to some of the challenges and convince her to nurse the baby at least some/much of the time, or even if she chooses to EP, getting good advice on that can help her be successful in that.
I am guessing that your friend probably knows that breastfeeding is not weird, she just has a "feeling" about it (from our society) and thinks that maybe she could avoid some of that uncomfortableness by not directly nursing.