AFTER I TOOK OFF MY TIARA CHAPTER 160
Nilet turned to her and spoke, "Istel, pardon me for calling you with your name, but I just want to say thank you."
Istel was baffled. Why would she thank her? Istel knew that deep inside Nilet's heart, she was resenting her for stealing her first love and their story had to end tragically. Istel was feeling really bad. Now that she knew it from her, Nilet, Istel felt ridiculous. She blamed someone who was hoping that she would end up with someone dear to her. Istel didn't know how to react when Nilet spoke that she was thankful.
Istel also realized why Nilet was clingy to Felix even after their marriage. It was because she didn't want to believe that Felix is married to someone he doesn't know. She felt that she was the reason why all of this happened.