She was given a metal brace to wear at night but it hasn't done observable good. The positioning of my hands in the keyboard was not right and when I corrected it and the doctor gave me a cortisone shot the problem went away. This was about 6 years ago and I have not had any more problems. Within a few seconds it was unlocked. This is a condition of multiple causation.
SOME people can prevent recurrance by just getting rid of the trigger.
Yes, this was a victory against carpal tunnel syndrome. My symptoms were locking of the 3rd finger of my right hand. I could not move it. This was over 6 years ago. At the time I was doing pretty heavy typing without any formal typing training.