Years ago I worked in bars around Portsmouth, Chesapeake areas of Hampton Roads and encountered a few women who worked gentlemans clubs. Most,not all but most, women that I met seemed to have some level of paranoia going on.Not saying that they didn't have reason. As a result it seemed that they always had that one guy that seemed to tag along with them everywhere they went. Usually and older guy and not usually an intimate relationship although I am fairly certain most of the guys where hoping that with enough persistance that would change. It always seemed that these guys where not physically intimidating to a point that the women did not feel threatened but provided enough of a presence to provide a sense of security.
I also know that sometimes these guys got the wrong idea about where the relationship was going. I would hope that by now the police have followed up with coworkers and looked into who may have been hanging around.
I wish they gave more of a description of the guy in the sketch. It would seem that if someone got a good enough look at the guy to do a sketch they would also be able to give approximate height, weight, age etc. When I first saw the sketch it reminded me of someone I used know. Although I haven't seen him in about 14 years and with no further information about the guy in the sketch it may not be remotely close to who I thought of.