It was 2017 (or 2018, I am not sure) when I stumbled over a similar scam, albeit at smaller scale. They sold Swedish government backed crypto currency, back when the Swedish government thought about it. Website looked legit, so I registered and had nice call. Didn't buy anything in the end because it was just fishy. Saw the Facebook ads for a couple of months after that. Police said they investigated, but could find any entity behind the ad and closed the investigation. About 30 minutes on Google turned up a British registered company behind it, and that in fact it was a scam. So I am not surprised she got away with it, police seems to be pretty helpless when it come to scams like that and cybercrime in general.
I had several interactions with governmental agencies and local police regarding cybercrime recently and in all cases each group said they had no resources to help. My local deputy sheriff was really nice though...
