"You are a doctor and a professor, Reem."
Translation:أَنْتِ دُكْتورة وَأُسْتاذة يا ريم.
Well, of course a transliteration can be used. But if we are teaching Arabic and there is a proper word, it should be used. You could use a transliteration for anything with that explanation, even if it used colloquially. And, respectfully, the fact that one exists in Persian does not really have any bearing on the matter.