MC got pissed off and he isn't wrong... not to mention that those useless people who came from the same world as him will end up finding a way to blame the MC for this, because all they know to do is throw the weight of everything that is happening on the MC's shoulders without helping at all

well he was told going back to their world was a lie.   so for him.  she lied to every of the boys they might be able to go back to their world and let them die without knowing the truth.  now after mc ask for the way. she says the truth and was 1 way ticket.  meaning all the ppl that have died or still have hope to go back   will break. also MC had a lot of accumulated fault and pain in his mind and body thx to the students and ppl dying. anyway MC was about to kill her but skeletons  prevent him  not for not kill her. but not doing in Rage.  since he will regret it.   in the end mc forgive her life and heal her. leaving a letter after she wakes up ( she doesnt know he can use heal. he lies to her that she was killed and resurrected under his control  to make her submit and torture her mind ) <<< funny thing she its  quite the M one.  literally after mc did that and start to help the citizens in the Fort she felt happy for being under mc command XD

The queen gets slapped twice and our boy wants to kill her. Luckily his subordinate stopped him.