I forget

I think it was something similar to stage fright. She was scared because every move she made was on camera

I think it started when she was humiliated by the two hosts, when she appeared on tv with Selena the first time. Her parents were watching along with violet and renox, and the mum slapped violet on the face because he created the magic cameras that broadcasted her daughter's humiliation. The king was furious and demanded the woman to be executed, but violet calmed him down.
I don't remember much, but i think he reassure him that it wouldn't be of no use, since Evie wouldn't even be the crown princess, and they needed to continue to use her, and killing her mother wouldn't help at all.