Jexxie...I wasn't thinking of this when I first posted but the role of "support person" is a VERY important one. I am reading 2 books called "Crazy Sexy Cancer Tips" and "Crazy Sexy Cancer Survivor" the author says you should assemble a "cancer posse" they are the closest people to us and provide us with different types of support. The one you can cry with, pray with, have fun with, go to doctor appointments with..ect you get the idea. I guess what I'm trying to tell you from a patients point of view...you will be a huge help to your mother. You can find the money...make sure you get there as soon as you can.
If money really is a problem and you don't have credit card for the flight, call the airlines and see if they can provide any type of discount. Or the American Cancer Society. I know there are programs to pay for patients flights for treatment. There may be something for family members, I'm not sure. It never hurts to ask!!