I actually knew someone like this once. It is a crazy store but basically she had faked being a med school graduate and medical resident (in fact she was never admitted to med school), and was trying to get an actual medical professional to marry her, the plan apparently being that once she was married she would quickly get pregnant, “take leave”, and then just never “go back”.
Anyway, in her case her parents were totally in on it. I’m not necessarily saying it is impossible they weren’t in this case, but it certainly made everything easier for the con artist I know about.