I don't know for sure as I've not punted this group, but you would imagine that if her profile has been allowed to be included with what looks to be a bona fide group with active profiles with plenty of feedback including published pornstars, it wouldn't be a scam...no guarantee that the pics/age aren't flattering and service list entirely accurate though.
The association with established providers Grace Harper, Fuck Club & Crome Events should inspire some confidence.