Hi there
It depends on some things.
Sorry deleted article as it doesn't relate to the birth.
The chance of passing it on is remote and the babies are usually fine so natural birth is often possible.
www.webmd.com/sexual-conditions/hpv-pregnancy
From what I have read it seems depending on the size of warts etc the doc should monitor her condition but many sites say there isn't too much concern.
Each case is different and I hope your friend can chat to her doc and that they can decide the best way forward together.