Is it normal that i feel guilty for how i treated my deceased sister?
When I was 14 I lost my older sister to malaria. My sister had the wrong "friends" in high school, they pressured her to do bad things which left her with depression and schizophrenia. Due to her illness it made her say silly things, she was depressed and incapable of handling a job even though she managed to get a bachelor and other things, this disappointed my dad a lot. He used to be verbally harsh on her, which my attitude towards her followed (I feel like I treated her below "normal" people's standards) but in hindsight I look upon her as pure.
After her death I realised how much she actually meant to me. A day before her funeral a pastor gave me advice to say sorry to her for anything I have done and if she needed to be sorry for anything, that i accept it. His advice really helped with my grief it was as if I was relieved; but a few years later I still feel an overwhelming feeling of guilt till this day. At times the guilt even makes me have suicidal thoughts, like I shouldn't even be alive for my neglect for her.
Is this normal in grieving?