Sira was very troubled in that period, when master Luther forced her to kill the demon, he didn't say much, he just implied that he would say that to their clan members and for that she panicked a lot .
He was technically threatening her to throw herself in the danger to save more people, if she was not going to do that, a lot of her clan members were going to race to kill that demon and they might end up dead afterward and hate and blame her for it ...
Sira was very powerful compared to all of the clan members yet she was so scared of unranked demons.
These types of demons are very dangerous, her mother was dead because of one of them.
She was panicking when she entered Kris's car that day, she started to tremble and he noticed that right away .