The battle with Elster left too much of a hole in Falke in the form of mixed memories. Technically, she doesn't remember in the memories she received from Elster that her feelings were directly tied to Ariane, which is why her head was constantly clouded with strange feelings.

She didn't know what she could do about it, but in the end it would make her snap anyway. The bioresonance connection became so strong that she began to rapidly dissociate, and her memories became distorted and her memories became unclear, making Falke feel as if she had suddenly will explode.

It was enough that one day she simply snapped at the first passing Replica, and how lucky she was that it wasn't Elster because she would have simply attacked her. But with you, with another Replica, to both of your surprises, Falke did something completely different. Right in the room where she was lying, she grabbed you by the face and, bending down to lower her height, she kissed you right on the lips.

— "..."