Are we talking about peripheral neuropathy
which is a complication of one of the medicines. I think you should talk to an experienced doctor how to handle this situation. However the effects of the PN by this medication is reversible. So you should not worry. Your doctor should add Pyridoxine
to your drug regimen.
If you are in India, TB is a notifiable disease
so hence you can report to the local district TB centre for betterment You will be educated well before the medicines are dispensed free of cost.
Meanwhile I also advise a good physiotherpy practice before she completes the medication.
All the best.