My friends DD13 has 'come out' as trans and is describing herself as a demi-girl, non binary, and has daily changing pro nouns that are impossible to keep up with as far as I can tell. She was she, then they, then just her name now they again, I think. Today they ran out of a cafe screaming and crying because a very elderly Italian man said "Buon appetito bella".
They are very feminine in appearance and when I politely and gently asked I was told that as they didn't like make up, shopping, watch love island etc then she was more masculine and a demi-girl. 
Now I am sorry if this sounds offensive, really, I am so confused. I work with looked after children and victims of grooming and exploitation and started to wonder if these gender identities have become a way in which privileged people are able to elicit sympathy. Is this not just a phase that a very privileged girl is going through? Am I missing something?
The children I work with would be suspended or expelled for much of what my friends DD has been up to which include screaming at teachers for being transphobic when they are delivering lessons on an almost daily basis she also physically attacked a boy in her year with ASD (badly scratching his face) who used the wrong pro noun, there have been a lot of incidents which she details on social media and gets hundreds of validating comments - many from adults!
Does anyone have any thoughts on this? My friend is very concerned but any attempts to settle it all down have been reported to her support worker at school as transphobic. I do not know what to make of it all, I was tempted to tell her what some of my clients have experienced and ask her if she still feels oppressed but resisted!
Sorry if this offends anyone, I am just going over it all in my head and would appreciate some sensible opinions!
Thank you