I am not going to address the copyright/copying/linking/embedding/terms of service issues at all.
But what I will say is this:
The fact that 'face pics' on AW are in something called a 'private gallery' is incredibly misleading. Why? Because the prostitute has no intention whatsoever that such 'face pics' remain private. If each of the seven billion people on this wretched planet were stupid enough to pay an average looking AW prostitute to see her 'face pics' then she would be ecstatic for each and every person in the world to see them.
The gateway to seeing her 'face pics' is not in any sense underpinned by a promise of 'privacy' it is simply in exchange for paying her. 'Face pics' in an AW 'private gallery' are not private at all, they are public with a precondition of payment. It is that simple. So drop the privacy/discretion arguments. This is about money and nothing else. If a prostitute puts 'face pics' in a 'private [public for cash] gallery' then she has accepted that they are for consumption by the public (albeit, on her terms, for cash).