There's nothing wrong with feeling empathy for the things that happened in someone's past, while still not forgiving that same person's later actions."And here's why you should forgive this poor girl for having the mc's sister raped and murdered, look at how tragic her past is"
Yeah nah, get fucked author i'm not falling for it.
In the real world there are so many examples of people who were abused early in life, which deserve our sympathy, but who end up becoming monsters later in life because of what happened to them. And we can still condemn them for those actions.