I got this one... sorry I'm late to the party, I'm in LAS now for a conference.

Is your friend married? If so, you're basically a "second" enrolled friend, even if she doesn't have another enrolled friend. This would make her forfeit buddy passes (outside of extended family). If not, she should have buddy passes, yes, and I'm quite certain that an enrolled friend is allowed to accompany a buddy pass outside of the lower 48.