@eulo Thank you for your kind words!

Something your wife might try, is to use a good cream on her hands and feet, massaging it into the skin gently. Or you could do it for her, a real treat for you both. It will show her even more how you care for her, and it will feel very comforting. Gentle massage of the muscles can do a lot of good. Keep moving and exercising, that seems to be a key. Often we hear when we stop, is when more problems happen.

You are supporting your wife, and helping her look for answers. That is a big thing, so please do not doubt you are helping her! Until her situation changes away from MGUS, I can understand why her doctor says "no chemotherapy at this time". The doctor will continue to monitor her, and watch for signs if she gets worse. Remember, most people live with MGUS for many years without any problems. Have you asked her doctor if the cramps are related to the MGUS, or part of something else?
Ginger