EDITED.
"Their betrayal was the storm that tore me apart; now I am the tempest that will drown them." ~Araneae Ruber
~
"THEN suddenly knights began running around yelling there was a fire outbreak in the house. But to no one's surprise, this knight was at the scene from the start and before anyone could comprehend what was happening. So it is clear he most likely burned down my sister's room with her still in it," She concluded her explanation, feeling confident that Tedric was going to get executed.
If it wasn't for burning her room and endangering the heiress, then it would surely be for being in her room, which was inappropriate. And based on Heath's reaction, when she informed him about it, she was sure he was not going to spare the knight.
