?

Hope is sometimes a stupid thing to hold on to

It's like she still had some hope on her family. Hope they will accept her one day.

Read more carefully. That's clearly not what it's saying. She was amazed at how easily she took her family out. That's it. Holding onto hope is obviously not 's*****' either. Since your family loving you is one of a person's most basic needs. Just because I have parents who love me doesn't mean I'm going to begrudge someone else wanting the same thing when they don't have it. Gabdab.

It didn’t take her 7 lives to realize that. She already took revenge on them in some of her previous lives, so now she just doesn’t care about that. Read more carefully

It's called Stockholm syndrome. You don't care about mental health and it shows. In her previous life, she killed everyone.