according to my source she never knew the offer was scam because the offer was fair enough
That's her first mistake. Judge a scam with 'this deal was too good so it is a scam, right?' Don't do it cause the scammers playing around the victim and know exactly what kind of bait they need to lure in, either by pure greed or a well-laid trap hiding behind 'a normal-looking' stuff.
That's how good scammers are, they make things looks normal and not an scammy type's of offers but behind that the hidden intentions are lying in,
You can't blamed someone until things revealed itself. The only thing you can do is to keep away yourself with something that really amazing to
see offers like this needs better assessment and not to jump right away.