J.M.
I was recommended once for diaper rash putting an over the counter anti-bacterial cream then on top of that putting a diaper cream like Destin to act like a barrier. We had luck with it when our youngest daughter had diaper rash. My other idea for relief for your daughter is to have her soak in that collidal oatmeal bath, I know Aveeno makes it. Also, she maybe too young for this, but try adding yogurt to her diet, the natural properties of it help with anything fungal or bacterial. I think I started my girls around 9/10 months on yogurt, Yo Baby is a good brand to try with not a lot of sugar in it. Good luck, I know diaper rash is no fun!!