@goldensrbest I had a rash under my breasts. My PCP misdiagnosed me and gave me a useless prescription. I decided to see a dermatologist, and he diagnosed the rash as eczema. His prescription cleared the rash in two days. This looked nothing like the eczema I have had in my hairline or on my eyelids.
If what you are doing does not help, see a dermatologist. I was very uncomfortable until I got the correct medication.
I think Dial soap is way too harsh. I use Tom's soap. I had read that using a spritz of amber Listerine underneath can help.
Also using the powder, Zeasorb, which has an antifungal can help. Other women had said the Nystatin cream helped or Monistat Complete Care Chafing powder gel helped them.
I would not use the Dial - too harsh. She needs a mild soap like Dove.
For a rash under the breasts I've used Monistat Care Chafing Relief Powder Gel. Someone else mentioned this too. I Got it at Amazon. Worked great. I get this rash in the summer when I perspire under there. It was so bad one time I couldn't get my mammogram. Using corn starch baby powder daily helps too after the rash is gone.