Your friend with the T2 boarding pass will not be permitted airside in T1, so there is no terminal transfer to worry about. She won't be able to get near the lounge, and there is no facility to take her from T2 to T1 airside since she has no reason to be in T1. That aside, the wining/dining options in T2 are far superior to the fairly crappy lounge(s) in NCE. Also note that Riviera is only for non-Schengen, and Azur only for Schengen flights (or maybe it's the other way around...no, I think I'm right).