I forgot to ask a question:
He suggested they meet in his hime city (1.5hr flight) for a night or 2 or they meet in a city in europe for a night or 2 (1.5 hour flight) while he is there on a business trip. A week ago my and her reaction was no, but in a week we've moved forward, their calls, sexting, my acceptance and trust in her, how she manages him and keeps him on the "pure sex" path has made that barrier smaller. In 4 weeks they've talked for 2 hours on a flight, about 2 hours of video calls, and 100s of sexting. He has a semi public very respected profile.
Should we do this. Safety wise we both are confident. Keeping it to sex only was a must but already i and she thinks this could be a flexible point. We've talked about it a lot and she believes if she falls in love i will be there to help her and console her if it ends.