My treatment center supplies me with Biafine. She might ask about it. I use it three times a day and wash it off and pat my neck dry in the morning before I leave for treatment.
They also reccomend using a soap with moisturizers such as Dove, Oil of Olay or Caress extra moisture. Never wash hard, never leave soap residue and pat day/ never rub. Of course when in the sun I use a full spectrum sunscreen which is SPF 30 or higher.
I hope she fines something before her neck gets to burned and sore.
Blessings to you both,
Barb~