I miss my bunny

Yesterday morning my bunny got out of his room some how and my dog got him and killed him. I didn’t see it cause my mom and boyfriend got to it before i did got there before me and didn’t want me to see my dead pet. But I hate my dog, I don’t wanna hate the dog, I loved my dog before so much but now I want nothing to do with him and every time I see him I just remember my mom screaming and my boyfriend screaming no no no. How do I move on from this. How do I forgive Earl(the dog) I don’t wanna hate him I feel bad for hating him because he clearly wants my attention and my love. I can’t stop blaming my self too. I shut the door to his room but some how it got opened maybe I didn’t shut it good enough. My bunny was 9 I had him since he was born. I miss him so much and I feel so terrible for how he went. How do I move on and forgive my self and Earl. I just wanna be okay