Hello ma'am, I'm sorry to read about her troubles!
Apart from Advil or Tylenol, you should apply, as often as needed, a moisturizing cream without perfume like Aveeno, Cutibase, Base Glaxal, Cerave and others. The cream should be applied often, there is no maximum number of times. I suggest keeping it in the refrigerator for a soothing effect.
For the bath or shower, avoid using scented soaps, and after the bath or shower, avoid rubbing the skin vigorously: instead, lightly tap the skin to leave a thin layer of moisture, then apply the moisturizing cream within 5 minutes after getting out of the bath.
If the situation persists for 72 hours without improvement, you should consult a doctor.
I will remain available if you have any further questions
Tom Samaha, pharmacist