I have CT and my wrists were so bad at one time I could not hold onto objects. Keep the weight off of the hands, keep changing positions often and rest the wrists when they get numb. Ride more upright. I avoided surgery by resting and taking care of myself. I still get occasional pain, but I have learned what not to do.
Otherwise, she will get so bad, there will not be any more riding for a long time.
Tom