Please, can someone tell me why "recém" is correct as "just" in some sentences but not in this one? Is there a particular place where it is used and not in others?
recém is extremely rare, especially in a sentence construction like this one. recém is used as adjective. For instance: recém-casados (newlyweds).
And yet, it was used in this particular set of lessons to say the sentence. "She just left."