And being a prostitute is not a crime, controlling prostitutes is however 
Indeed is it! Controlling Prostitution / Agency Owner / Pimp - whatever you like to refer to the madame as, she is running a brothel. Prostitution as defined, is not limited to penetrative sex. A hand job counts too, and with more than one girl in the establishment, particularly when offering a 4 hander, breaks another law too. Proving she is controlling prostitution is another matter, which is why she, among thousands of agencies who do a similar thing are able to continue to operate illegally!
Slander one says? Before Eva hung up her cunt and started controlling prostitutes - she is well known, and openly admits herself to being one herself.
I think the most important factor is why the fuck would anyone choose to give their money to this rude abnoxious ruined hippie pimp when she makes threats to punters, including outing them to their families and openly admits to short changing customers for time because "most customers would prefer to get an appt than not to have one at all" and saying "we have a lot of wealthy customers, for whom our prices are reasonable, and their life is rushed and stressed and they prefer to get a slightly shorter time than none at all, and the price is of no concern to them".