She is losing her memories, she forgot about the meeting with hyunwoo and she always protects him behind his back. It's just that she is unable to show her true feelings infront of hyunwoo.
I think Haein will not die rather she will lose her memories of hyunwoo during her treatment process and they will replicate that Germany honeymoon phase so she can gain her lost memories.
it's one of best KDrama in recent times, first two episodes are solid and it will only get better this point. I am hoping for a miracle to happen, I want a happy ending.
Episode 2 is better than episode one, a 9/10 episode imo. first two episodes gave us the povs of both main leads the real story will start from third episode.