Hope all goes well with your friend

They do get tube-fed and breastmilk are best for premmies.
Tip: Get someone to show her how to use a breast pump. I was a lost case and had to ask a fellow patient to show me how to put the thing together and how to work it. It was extreamly frustrating to not know, so help her to prepear for that. I would recomend to help her find someplace where she can hire a double pump. The more time you spent pumping, the less time you get to sit at your angel's side, kwim??
I expressed (handpump at first and then got myself some batteries) every three hours (5 minutes per breast) and then every two hours. I stored it in sterile bottles and the NICU staff would feed her as needed. I donated the rest to the milk-bank. When you pump, you stimulate A LOT, so you have plenty and when bubba only needs about 1ml per feed the rest can be put to good use for other bubbas. It also made me feel worthy. Made me feel like I am a mother. Not being able to cuddle your newborn is hell and makes you feel like a failure, but milk was something I could give, kwim??

Like Sally said, at around 34 weeks, they can start feeding from the boob. She will have to keep expressing, because she would not be present for all the feeds.