In portuguese would it be also correct to say "Ela é ainda uma menina."

..until the operation at least.

I believe "she is still a child" should be acceptable. The gender is already stated and Duolingo already defines "menina" as "child."

"menina"and"menino"sometimes could mean child?

Where did ainda come from? this is the first time im seeing that word.

The correct is "Ela ainda é uma menina" (I speak portuguese)

I put "She is still a child" and it was marked incorrect.

The audio sounds kinda garbled to me, so it's kinda hard to tell whether she's saying "é ainda" or "ainda é".

(...you'll be a woman soon)