Sagradafamiliar totally get where you are coming from re diagnosing Lucie.
Dont think most of us have though. It's not wrong to mention it at all though in my opinion.
My son has aspergers and acts, in some ways like Lucie. That doesnt mean Lucie must have aspergers, however I can understand her. Where as a lot of people are saying she is playing a game. I'm having observed my son acting in ways Lucies does, I can totally believe she isnt flirting and just wanting time on her own and gets on with certain people better. These people happen to be men.
I dont believe she must have aspergers, but so many people are saying she is manipulative or game playing or went after Amy or pretends she doesnt know what she is doing.
I have used a few comparisons, because I can understand her actions in a different context to that. Not just from my son, but from my own experiences when I was that age.
Imo, her reactions are just fine. There is no normal because normal doesnt actually exist.
People can recognise her reactions from their own personal experience with aspergers, without diagnosing her.
Many people wont accept her reactions are just fine, they are her own, they dont hurt anybody, and that's ok.
So yes, dont diagnose but I dont thinks have.