Whoa, take a chill pill, sweetheart. My comment was meant as a light-hearted joke, not an attack on you. But if you want to go, let's go.
First, thanks for acknowledging my intelligence; unnecessary, but appreciated nonetheless. However, "I didn't say fluency English guarantees...", really? Leaving out the much-needed preposition, "in"? I just chided her for the same thing. Not your best foot forward on a debate about English proficiency. Minus 10 points to Slytherin.
Next, her English is objectively poor (*see above reference to failed English Proficiency Exam for more) for a bilingual individual. It is subjectively very strong, according to you. But you are objectively wrong, so, swings and roundabouts, eh? Also, your sentence structure made "small minority" sound like you're trying to say that only black dwarves speak English in Brazil (not really, but if you read your sentence back with that in mind, it's pretty funny). Anyway, I think you ought to look up "objectively" and "standardized testing" before you go off.
Lastly, yes, I speak a second language. And no, the octave and timbre doesn't shift with the language I speak. My accent does, because I try to speak the language properly, but that's it. She's stated multiple times that it's a put-on because she hates her real voice; your argument is a non-starter. When I said, "for each simp in the world who tells her...", I was referring to the people who tell her that her English is good. It isn't. She has also stated this numerous times. They are telling her a lie, in order to get into her good graces (which will never work). That is the definition of a simp. You also managed to call me a dumbass, then tell me to look up the definition of "ad hominem" without pausing to witness the irony of it. Congratulations, 150 points from Slytherin.