Backpage 101

So I had a friend who hired his first back page prostitue about three years ago now and he totally got fucked. Not in the way you would prefer either.
So he gets the hooker over and she is like "damn it smells good in here, what you smokin on?" And he like I just smoked my last bowl of some sour d. She responds " well you look a little nervous for just smoking, is this your first time hiring someone off BP?" He shamefully admits yes and goes on to pay her the $200 for 30 minutes. Not more than 10 minutes later maybe 5 ( I wasn't there) she said she has more weed in her car "wrapped up in a blunt ready to go." Well my dumbass friend was like hell Ya I'll smoke a blunt and she's like hold on I will go get it. Well folks that sneaky bitch took his $200 and never returned. Aka backpage 101, probably the oldest trick in the book. Not to mention he lived on the third floor of a big apt complex. What would you do in scenario like this everyone? I said we could set her up and I'll call her but then we risk having to fuck her pimp up....let me know your thoughts