OMG yes!! you most definately can get migraines without the pain.
There is quite a bit of info on the web if you google migraine's or painless migraines or headacheless migraines. I get a variety of migraines and the painless ones too. I thought I was going out of my mind until i spoke to my doc and did some research of my own.
take care and tell your friend she's not alone! tell her to hop on the healing well forum. :)
All the best
'the train of thought has left the station'