Her Sub-conscious mind started deluding.

Ch-152

Even Chasina is a human being. She is not a god. She is a person with feelings. She is strong yet weak. No person is completely strong. Everyone has their ups and downs. They have the highest and lowest points too. 

But the lowest point that Chasina is facing is very low. Chasina who always had the highest points in her life is facing the lowest point in her life. 

She held onto the pain which was caused by Henrieth for two times. But the third time she lost it. She turned into a different person. Maybe it would be correct if we rephrase the sentence by saying 'Different persons'. 

She hit herself hard with the betrayals caused by him. She gave a chance to him again and again which landed her in this position. She knew she would get hurt but she gave him a chance thinking that he will use it wisely. When she thought he used it and returned her love she left her without any trace of his appearance. She cannot even give him any chance.