Such is the nature of this industry there's a decent chance that she'll end up one day working in BA/Virgin/EK again as First Officer for a Captain who's 5 years younger but is currently an FO in those airlines. It's great to get a quick upgrade and congrats to her but can one really do that short haul job with all those early starts for 40 years?
Not easy to think ahead that far in younger years when most of us subconsciously believe we'll never get old.