When she knew she had traveled through time, she faced everything calmly;
When she knew she was traveling through the HP world, she faced everything with a calm smile;
When she knew who she was, she was no longer calm, because Nacisha Black was a big supporting role cannon fodder
When she knew that there was someone traveling through time with her, she was no longer calm, because it was the protagonist Miss Su who was deeply in love with the platinum noble.