I had a similar experience with a girl in Acton earlier this year. I suspect the girls working in these situations may be trafficked or just forced against their will to do this and that's disappointing. I've visited a true indie before and it was such a great chilled out experience, but you pay a premium for it!
I think people need to be extremely careful when they raised suspicion of trafficking without any strong evidence.
What you probably are not aware of is that by saying this, it is the same thing you are saying that people including people in this forum who have visited this WG are criminal. As with trafficked WG it does not really matter whether the punters know or not that she has been trafficked or not, they are still criminal.
I believe not many people will be happy to be categorised as a suspected criminal.
Providing a crap service, disinterest, etc are not a strong sign of trafficking. I have paid a local WG for over £100 an hour although not often but I still met the one who are disinterest. Some WGs are doing these jobs entirely for the money and forget that the people are paying and therefore entitled to the service that have been agreed. You will find it anywhere irrespectively whether she is managing entirely by herself or she is using an agent.
The WG who are coming from an EU country are higly unlikely to be trafficked. How come the people who could just wake up order the ticket online and go home could be trafficked?
The WG like sweet dolly, how come she has been trafficked when she is free to move around from one place to another when the demand are low? Sometimes she is operating from a hotel.
If you see any evidence of trafficking please report it to crime stopper.