Has your wife tried using a TENS unit?
I have a TENS unit from the VA as well as an H-wave. TENS units vary greatly in price. I will supply a link to the unit that I received from the VA. At only $29 for the TENS unit vs $4,000 for the H-wave I can still give positive testimonial for the TENS unit. If I am frequenting this forum I am likely using one of the two. An effective method for myself is to apply the
TENS unit and lay on a large ice pack. I've also used the TENS unit while at work, as it is light in weight and portable.
www.tenspros.com