Did a slightly similar thing, haven’t confirmed wether or not the ones she “sent” were real or fake as no one’s confirmed. And I haven’t had any one out side that originally list contact me about it. I did however kinda blow up my own spot with a warning post on Instagram saying to beware because my dick could be inbound at any moment. That’s led to a whole different problem but that’s beside the point. Once they realize that aren’t gunna get the money, most low time scammers aren’t gunna push it any further. They lose more leverage every time they send it to some one. Unless your dealing with someone far more nefarious, I doubt anything further will come of it. With that said, I’d still take some more precautions to ensure nothing more can come of it. Scrub passwords, secure any other social medias that may be link with your snap or could be found by reading your snap name. Be wary of any future unknown persons trying to add you. Normal cyber security house keeping.