It's been delivered on Monday

I went online and ordered myself a puppy it was so cute online and when it arrived at my door on Monday in a ripped box I was so happy I grabbed it and called it sparky it had faint green fur but I still loved it. 3 days later my nephew came over for the weekend and we had lots of fun the three of us but when it was time for my nephew to return she went missing I searched everywhere I gave up eventually thinking she walked home. I went outside to hang up washing when I saw dirt everywhere and my adorable puppy digging it up I thought that was where his lost toy was so I dug up the hole and to my surprise, there was my nephew dead. I rung up my sister Alesia and I  said he passed away your daughter passed away. Alesia was screaming with fury she said she never wants to see me again. So my cousins coming next Monday and I thought maybe I ought to keep an eye on her for the week everything was okay i sat by the bed night time and day time I followed her and sometimes waited outside the door the day she was meant to go home she had one night left I was almost going to fall asleep when I heard a scream it was my puppy trying to rip apart my cousin his teeth were locked on her. I grabbed my puppy and surely I tried to stop him but he got worse I told my cuz to run home. She did and my dog was now calm. Not that I know the problem I went to the vet they said the only solution is putting the dog down I couldn't do that. So I went to the country far away from everyone and all my puppy would kill is animals that were okay until I got sick and had to go to the hospital and my dog came. I couldn't go to sleep and my puppy was walking out and eventually, I heard another scream. That was the last hour of my life I collapsed and god knows what happened to me.