Have you stopped to ask why the author has yet to ask the police how such investigations are handled?  What she has done is trot out a basket of figures, dump on the cops and quote experts, none of whom have ever investigated a sexual assault.   Were I the one to do this 'investigation', I would have gone to the police first, asked how do you investigate these' he said/she said' complaints, and determined the issues involved.   Then, having the information, taken it and crafted my article.  

As it is, it is not an investigation.  Instead it is a literature review, coupled with the marshalling of like opinions to dress it up as an investigation.  It is not too difficult to suss out the author's agenda.