if she's a goddess, she's got to have a reason for being in the such a high position. people look up to her too, not like a tyrant or a dictator.
A very dark side of the goddess of course is that she sends people she deems "useless" to their death, but apparently no one knows that about her (unless I missed something about that), all of the students think MC is dead and she does too.
If the goddess got where she is now by pure chance than idfk. I assume the goddess did something('s) to have earned her goddess title and powers.
The MC was wronged by her but does that make up for wanting to kill her
"She was going to kill him"
I guess revenge could be an answer, not civil at all though.
It's like if someone was not guilty and sent to death row for whatever reasons but the convict happens to break out of jail. Now instead of breaking out of jail and running away never to be seen again, the convict hunts down the judge and jury and kills them just because he was falsely convicted and sentenced to death.
Both goddess and MC are in the wrong. 