She's most definitely older than 18.
I remember her age changing to 19 on her previous AW account last year (like it auto updated her age after the birth date she set) and then several days later it changed to 18 again. That's why my earlier post suggested she may have made a new account to manipulate her age.
I agree with Uk765, it was a pretty crappy service. Although I gave a positive it was a weak positive and only because she was new with significant room to improve.
The later reviews on her old account after mine shown she didn't really improve any. Maybe someone else will have a different experience.