Why is Abby hatred?

Yeah he killed a grandfather aged person but so do every Pittsburgh hunters, David town cannibals , any wlf members, seraphites and rattlers do and infact even worse. Why is she getting not 100s of people in the game. It makes zero sense to get mad about a person death in post apocalyptic where 1000s of people die every day and he would have died fews years later anyways.

Also Abby is only 21, she makes mistakes. She lost her family at age of 16 and lost her community grew up with.

It's not like person who she killed didn't killed or tortured anyone. He was literally special torturer.

Talking about quantity the person she killed, killed 20 fireflies, his only father and potential millions, if not billions. But she only killed one.

She got more tortured, lost more people, and had even harder time travelling to Santa Barbara.

I get that the guy saved her but so did she by taking him to shelter from the horde.