Hi,
Welcome to the cafe :)
Has your friend had liver function tests to rule out obstetric cholestasis? If not then,please,please tell your friend to go back and see her obstetrician or midwife as soon as possible. I had severe itching in my last two pregnancies which turned out to be obstetric cholestasis. This can have serious implications for the baby if left unchecked and your friend should ask for liver function tests to check her bile salt levels. If you look up on the internet you will find lots of information about it.
If this has already been ruled out(which hopefully it has) and the itching is general puritis, some steroid creams are safe to use in pregnancy, the doctor will know which ones are and you can also double check with a pharmacist.
Gentle Blessings
Helen