I think your maths is a little off and I'll explain why.... whilst it's true that the majority of men who groom girls are white men, they also mathematically occupy the most populous group. The number you're looking for is the amount of prosecutions relative to population size. This may throw up a different set of statistics - and I would suggest if you look at those figures that Asian men are likely over-represented relative to their population size. Predators exist in all communities and they are not reflective of those communities. There are complicated reasons why there might be an over-representation of certain demographics relative to their population size and this isn't a straight forward situation.
Braverman is wrong to generalise from the three cases we found in the North/Midlands and suggest this is a problem specific to one racial demographic, the reality is more nuanced than that - but you have over compensated for her unpleasantness and given the impression there aren't some cultural problems we need to explore.... there are, these also need to be addressed.