Hi,
Is she stopping over en route? some countries wont allow people to enter with less than 6 months validity remaining (I talk from experience!!), the airline would get fined unless she is transiting through...I drove to Canberra once and got a new [british] passport overnight(!) as the airline said they would / could not allow me to fly to Singapore, HK yes, UK yes but not Singapore.
Although a few years ago I presume still the same.
Good Luck