The storm was already ahead approaching each and every person's life. After Hera and everyone found out that the person who came back injure was not the crown prince Kyte but instead Noah Gilbert instead.
This ticked off Hera since she felt that she was the one who got insulted. Janice obviously lied saying that she thought that the person who was inside the bed chamber was indeed Crown prince Kyte since all the lamps and light sources were cut off.
In that moment Hera couldn't even get furious at Janice since what she said did make a perfect sense. She knew that the person who was behind this petty tricks must have been Queen Zelda, since Zelda was the only one person who hated Janice's prescence around the crown prince.
Hera was angry at every single person at that moment when she caught Janice curing somebody who wasn't the crown prince. She felt that Zelda's trick worked, but there was no direct sword that could kill this kind of politics.
