Traslation- whats wrong with you

my daughter really wants to know how to say this, What is wrong with you?

any help please. Thank you

(1) In which language? The two most well-developed are Quenya, the "High Elven" language of the Blessed Realm, and Sindarin, the "Grey Elven" language of most Elves we encounter in Middle-earth.

(2) "What's wrong with you?" is very idiomatic, and we don't know how exactly the Elves would phrase it. Even the English expression can be asking various subtly different things. What's the context here?

Thank you answering.

Sindarin

My daughter says this in English all the time. Referring to someone having done/said something stupid, or not fitting the situation.

Got it, thank you! Again, it's is very idiomatic, and other translators will likely have different ideas. I'd take a leaf from the English and say something like:

Man dŷr vi gin?
lit. "What (is) mistaken/not right in you?"

Amman han agóreg? or Amman han ebenneg?
lit. "Why did you do that?" or "Why did you say that?"

Thank you!!!