Is having a PNS an option??? it is used for both tn and on . it is a last option there is a Sticky up top with info about it and where others have shared their issues and journey.
Most important PLEASE KEEP being there for her .you are awesome for searching help and info. make sure she keeps going to therapy too.
I will have you both in my prayers and healing positive low pain thoughts.
DONT GIVE UP!!!
PEACE
BMW