So let's look at this without the distorting lens of what we may happen to think/feel about the particular industry she works in, because I can name several "clean" industries that are filled with the scum of the Earth that are doing much worse things than this.
Even hookers are entitled to a bit of privacy, and to have a good reputation.
What they do for a few select clients (and considering her black book, she was pretty selective) they may not want to do for the world at large...
... And considering that they trade on their bodies, they certainly deserve a cut of any revenues derived from the use of said property.