You don't say where you and your wife live, but one thing I'd suggest is that you and your wife learn more about options for treatment. You can read about the two main home dialysis options -- peritoneal dialysis and home hemodialysis -- from the main page on the Home Dialysis Central site. There is an an online tool that helps people review how different treatments "fit" with your active lifestyle. Since it's obvious you enjoy traveling, peritoneal dialysis and home hemodialysis (if the machine is portable) allow travel much easier than doing hemodialysis in a clinic 3 days a week. Check out My Life, My Dialysis Choice site at http://mydialysischoice.org/.
If she doesn't already have it, a book written by Dori Schatell, who is the executive director of Medical Education Institute that set up this site and a nephrologist from Australia, John Agar, MD, called Help! I Need Dialysis provides helpful information about kidney disease, treatment options, including how to fit dialysis into your lifestyle, rather than fitting your lifestyle around dialysis. You can order it from Medical Education Institute here - http://lifeoptions.org/help_book or it's available on Amazon.com in print or Kindle edition.
You and your wife might also enjoy reading and posting to the Home Dialysis Central Facebook page. It's a closed and moderated social media site where people on home dialysis (or considering it) and their home dialysis care partners give and receive support. https://www.facebook.com/groups/HomeDialysisCentral/
Another treatment option for kidney failure is transplant. In the US, people can get a transplant when their kidney function is 20% or less. Kidneys for transplants can come from living donors (not necessarily relatives) or people who died and made their wishes to donate known before their death or whose families agreed to donate their organs. I'd suggest she learn more about this option and find out if she's a candidate. Although transplant isn't a cure and there are pros and cons to transplant, having a kidney transplant often allows the most active lifestyle.
Finally, your wife needs to make sure that her doctor and staff at the dialysis clinic know that she wants and needs as much information as she can get. Learning all you can about kidney disease and treatment, asking as many questions as you need to ask to get the information you need, and taking an active role in treatment and treatment decisions have been shown to help people do better and live longer.