Blaming a child for causing the accident is just terrible
Fault lies in the lack of proper adult supervision in that orphanage. I mean who allow a little girl to play with a match box or any flammable substance?
Mc should have gotten a proper therapy
And about her victim friend, I get her resentment, it's totally understandable but since she is smart enough to guilt trip MC and manipulate her, she should be capable of understanding that what happened back then was an accident and fault does not completely lie with MC, she is just a twisted person who also should've gotten therapy

I HATE that shitty bitch mc, after that stupid ass thing that made her friend suffered and got addoption cancelled, she still managed to live happily with caring parents? Stop ur shitty disgusting tears for the god sake.
JUST GO DIE