>her hymen was described as normal.
I think most of these 'prior existing sexual abuse' accusations stem from people who react to the pageant participation and consider that to be an example of pathology. From the assumption that the parents are not described as normal, they see all sorts of things, including sexual abuse. A pathologist's statement that contradicts their views is simply going to be dismissed by them as would any evidence that pageant participation does not mean pedophilia.