Hello Dee, If up to me I would travel to get the best care possible. If she can get
Erbitux, it seems to be very promising.
If she is being seen by good doctors you can worry less about the various tests and results you have listed. Trust the professional help to know. I am sorry that this has advanced as far as it has before she was properly diagnosed.
Pain control is something you can insist they work on. Be wary that Morphine can cause some strange side effects. Search here for other pain management drug options.
Take care