"Mara does not understand Torg."
Translation:torgh yajbe' mara.
Yes, that is correct. There is no comma anywhere in either the Klingon or the English sentence. If there were a comma after yajbe' it would be separating Mara's name from the sentence, indicating we were calling her name and talking about someone else. Without the comma it indicates, instead that we are talking about her and gives no indication who we are talking to.