Hello! I'm sorry for your dad...when I read this, somehow I can relate to your situation when my mum got cancer seven years ago. I didn't able to see her while undergoing medication until I lost her. What I did that time...I got in touch as often as possible through phone with her or my sister who looked after her, know her condition from time to time. I can't go home because we chose to send monetary for her medication hoping that she'll be better. I cried a lot...had sleepless nights...scared...thought in advance of things that will gonna happen. Gave of what i had and did what I can in every aspect while she still alive at that time made me had peace.