Looks like Lichen Planus....a type of autoimmune skin condition.. preferably a skin biopsy should be done for final diagnosis till then medicine can be applied for which please contact me on Practo pro
Next Steps
If the itching is severe that she can not sleep, then one Tablet Atarax 25mg can be taken after dinner x 7 nights
Health Tips
Keep the skin moisturized and keep finger nails clipped short...get few blood tests done..