Wait for Dr. Bailey's reply on the RG Cream because it may burn because of the menthol in it.
Last year my neighbors daughter had a horrible diaper rash that would not go away and she tried everything that the doctors told her to do via precription creams and so forth. Nothing worked. I told her about Extra Virgin Coconut Oil. I told her to just try it and see if it worked to take it away. She did and to her amazement it went away. It will never go bad, rancid. I use it on my have at night. It sluffs off the old dead skin and smoothes my skin. The next morning, there is no oil on my skin from the coconut oil. My body sucks it up. it is the omega's that me need. Ever since I started taking Humaworm, I really don't have to use deoderant anymore but once in a while when I eat a red meat then the next day I will get a sweaty smell and I use a mixture of Extra Virgin Coconut Oil along with Mediterannan Oregano Oil P73. It is 1/4th cup of the Coconut Oil to a few droppers full of the Oregano Oil. I use it as a deorderant.
There is another person that comes in here that her husband had an itchy anus and I told him to try the combination that I just told you and he did and it took away the itchies. I would not try that mixture on your daughters bottom because it may also burn. Just try the Extra Virgin coconut Oil and see if it works. Hugs. Donna