Although it's free of photos, I'd not say an advert stating "Professional massage with a happy ending" is particularly subtle - unless she rattles out a few Tommy Cooper gags at the end !
She may also have a low number of feedbacks as you'll get fewer takers for outcalls only.
Alas, the subtlety is lost on you Jon.
Yes, "Professional massage with a happy ending". Why else would she advertise on AW?
However, if she wants to filter out those who want more, e.g. for her to be naked, oral etc, then does she:-
1) Post provocative pictures but state ...... "I don't strip or provide oral" ..... knowing that punters think with their dicks .... so will see the pictures ..... but not read her limitations.
or does she
2) Advertise in a bland way so that those who want more than massage & HE move swiftly on to someone else?
That's the subtlety .... advertising her services in such a way as to attract custom from those who are interested in massage plus HE ..... rather than those who have no interest in massage but bizarrely book massage providers then pester them for oral and/or FS.