Well it has to do with Airbnb because it began on Airbnb and when she went off site, she didn't realize she was going off site. This constantly happens...people dont' get it. They go off site and contact someone by direct email, then they get what they "think" is an Airbnb email ...it's not.
It does not look like she makes reasonable choices in general. The amount she paid for six months means she looked on the very high end. Over 6000 a month is rare. Spending so much money in advance without reading the listing from top to bottom? She can’t have rewad much before following the scammer offsite. Not the warning on the listing page, not the warning on the first reply mail. The new place us cheaper including the agency fee, but she wanted to avoid agency fees. The airbnb fees are about the same for expensive places... On the CC I came accross a new form of scam: people look on google and get directed to longterm rental sides, having the word airbnb as a subdomain. They never start on airbnb, but on a clone site. And then pay by non recoverable bank transfert.