Hello, I am flying through Xiamen with about a 2 hour layover:

Singapore-Xiamen-Vancouver and my girlfriend who is Thai is on a similar flight Bangkok-Xiamen-Vancouver.

When I called the China Visa office in Singapore they said that neither of us need a transit G type for our 1-2 hours in Xiamen, yet after booking the flight the airline said that she will need to get a transit G type because "the policy had been changed." I was wondering if anyone knew about these changes or if these is some other reason they are saying she will have to pay?
Thanks for any help!
Brendan