The rest of the day, J kept herself busy by lecturing Diana. But Diana noticed that J was not herself the whole day, because she seemed to be repeating some of the details that she has already said. She was afraid to ask her about Dr. Ivanov's kiss to Jacob, she doesn't seem to be in the mood to talk about it. And knowing her temper, just a look from her might send her to the ER for hyperventilation.
Jacob has been calling Diana as well to check out on J, apparently, Jacob was trying to call J but she didn't answer all his calls. Diana never saw J look at her phone so she assumed that her phone is in silent mode or probably in the locker.