^hubbah! It's hard to tell! She deffo looks ethnic; a bit Nepalese. Adam has always had exotic and diverse tastes in his women.
I'm thinking (speculation only) that she could be his friend from the region who is acting as his friend-tour guide. Like how, say, if we were in San Fran, we'd meet up with an old friend for them to show us around their turf. I'm sure Adam has good friends all over as he travels so much!