Because I'm very intuitve, have read her prior posts, and am old enough to be her grandfather (I would guess her to be 15) and probably your father.
A blind man with a cane can see she's just lonley and likes to start conversations just for the sake of establishing some discourse...nothing wrong with it but lets not get carried away. She's fine.
BTW she may really want to know what the results would be but she knows that if she had asked, "If I take 200mgs of Zoloft..." she would have been bombarded with, "dont do that", and," you shouldnt take any meds w/o talking to your doctor...." etc. So instead she says she already has taken them. Anyone who knows to ask the question about serotonin syndrome/toxicity would not have taken an over dose unless she was suicidal...and I dont think thats the case. And if Im wrong and she's dead then the argument is moot.