Amy,
I can identify with you because I have a 19 yr old daughter who is a student at U.T. in Austin( not to mention two more in high school). I just want you to know that your dad will very likely get through this just fine. I had a tough time of it during and particularly after treatment...it really requires patience... not that we have any choice but to be patient.
The good news is that now, two years later, I am cancer free, I look and feel healthy and, but for some difficulty swallowing and the ever persistent dry mouth, can do all of the same things that I did before I was diagnosed. Of course I don't have as much energy as Brian Hill, but who does!!Encourage your dad to hang in there and I wish the best of luck to you and your dad. He is lucky to have such a loving and caring daughter.
Danny G.