I don't think so, if she was the Greta-obsessed media here would have let the people know by now. But you are right though, she does look very child-like, quite different from other Swedish girls her age. Maybe she's just a late bloomer?Serious question: is she on puberty blockers? She's way underdeveloped for a 16-year-old.
Apologies if it's been discussed to death. I couldn't bear to follow this thread.