I was just looking back at my calendar for three years ago. I finished tx of rad and chemo just about now, and traveled extensively from mid August through September and October. I still had the PEG but by then my mouth had healed well enough for me to eat, even if I could not taste much at first. I noted in mid October that I could finally taste sweet, which is the last to come back. At first,I had dressings on the neck burns and no hair, but I was so tired of being on a schedule that I was anxious to go, as I think your mom might be. Starting about a week after treatment, my energy increased exponentially. I suspect the idea of a vacation to look forward to will be very welcome for her. If she thinks it is a good idea, go for it! I was so glad to put an end to the whole being sick thing, that a change of scenery was just wonderful, and being out in the real world did a world of good for me, as it may well do for your mother.