Morgo,
I dont mean to scare you, but if your missus is working for another airline, unless the airline she works for has an agreement with Virgin you may not be allowed to travel on your own.
I know this is the case with Qantas staff travel. With Qantas you can only fly Qantas, American airlines and Air Lingus on your own, becasue they have some sort of an agreement. But with all other interline carriers you need the employee to travel with you.
So just incase you might want to ring around and find out what the go is, so you dont get messed around with.
Rollz
