The moment the dress was brought up, her guilt had already been sealed, and no amount of sophistry could get her out.
Cathera immediately showed a triumphant look as if to say what else can you say now, but in order not to attract disgust, she lowered her head and waited patiently for the verdict.
Marie stuttered and tried to explain it off as her accidentally touching It because they were in the same room but was quickly refuted as the Guqin was sealed in a wooden box, and only by having direct contact would the powder spread.
There was nothing much to say after this, but instead of directly dragging her out, the Concubine only told them that if Cathera's performance were affected by what she did, she would be sent down.
Cathera was also given a new Guqin.