You'd be stupid to fire Hajime after this. Now he's an employee who:
- will never make a mistake like this ever again
- will triple-check everything he does to not fuck up again
- is extremely loyal after you show that you still trust him
Don't worry, next page she'll rebute by thinking "why are they saying those job related things in a lower voice, it's just asking for a misunderstanding".
This seems like an obvious setup for "if she dies, you'll go berserk and kill all the monsters easy peasy, but if you just went and did it out of your own volition..."