It is so good that she has a friend like you. All the above advise is good. Just listening is underrated. It is seldom that you can find someone to just listen and not jump in with a bunch of advise. It is ok to tell her this is not normal. It sounds like she is disassociating during sex. This can happen to women who have been abused. I tend to do it as well. I have been married for 25 years to a wonderful guy. I know that men need intimacy, so I "take care of it" regularly, but often I am not present. My husband has learned to read me, and if he knows I am disassociating he will stop, back off and talk to me quietly. Tell your friend that with the right guy, she can have a decent sex life.