The brothers love for Kitty

I know it's none of my business and they probably have to do it to cope but it annoys me so much that the brothers still defend and love Kitty. I'm a petty bitch and I don't feel like she deserves their love, forgiveness or even them feeling bad about what happened it bothers me that even in death she makes their life worse.

Also their family also acts like her only sin is not standing up to Jose. Why? Why does everyone ignore how vile she was?

Anyone else?