the Blacklist

Hi, I am an orphan from the IMDB messageboard. Soon a lot of my brothers and sisters will follow hopefully. We like to discuss the puzzles , the Blacklist brings us. Last episodes, it became clear Red is under attack by somebody. Others speculated that it might be Mr. Kaplan or Mr. Kaplan's sister. May be Katerina. I am wondering too who is behind this thread, and strangely, I can only come up with women. My guess is, it is Jennifer. She is mentioned in season 2, and it remaind unsure where she is, or what happened to her. One of many loose ends, so to speak. In season 2 when her name came up, Naomi said to Red:"She knew that one day you would be coming for her...."which sounded kind of omminous. She supposes to be his doughter, and that would not have been the frase I would have used. So my guess is Jennifer has a score to settle with Red and is behind these attacks.