That’s probably true but I want to see if there’s character development for Mary beyond wanting to just control her. Korean webtoons tend to have bullying as a very normal thing and they often try to garner sympathy for characters like Mary somehow.
I don't think Mary is irredeemable.
After all, the girl on the wheelchair fortunately didn't die.
But it would be a stretch to say that she could wholeheartedly get back together with homegirl. Even as friends.
The path that Mary has to walk in order to be a redeem herself is one she has to walk alone... Just as the victims of her past actions have.
We are also still lacking context on her side of things too. So, we'll see.