I agree that self harm is a tragic response to the kind of environment she was apparently in. I do not agree that this act somehow makes her “perception of the world” (whatever that very broad phrase might mean) unreasonable, or that it proves she has an “extreme personality” (again not sure what, definitionally, that is). I think perfectly normal people react in unexpected ways to extreme environments and unless you have some reason to assume to otherwise I’m not sure it’s reasonable to look at self harm and then default to questioning the person first and not the situation first.