My beloved puppy died. I am very sad. What should I do?

My experience is similar to yours. I also have a puppy named Mimi. I have had it for almost four years. She gave birth to three babies, and there is another one in her belly. It was my fault that she couldn't hold her mother back, so she gave her to her grandparents to raise. I went to see her every day. Yesterday, as soon as I got home, my father told me the bad news: Mimi accidentally ate rat poison. dead. I didn't believe it, so I asked my father to take me to my grandfather's place. In the past, Mimi came to greet me as soon as I went to my grandfather's place, but today, Mimi did not come. After I went back, I couldn't sleep at night and cried all night. This is not one life, but two lives. My father said that if Mimi dies in two weeks, the three babies will have hope to live in this world. I My father was worried that the three babies would not survive, and my mother wanted to throw away the three puppies. When Mimi was in this world, I always raised her as my darling. In the past, I held Mimi in my arms and went to the park to play. When I put her on the ground, she would chase me and I would chase her. When her body got dirty, I went with my father to help her take a bath. This was my happiest time, but now Mimi is gone and her body has been thrown away. I haven’t even seen Mimi for the last time. I am very sad. Mimi is already three years old, which is equivalent to three years of age for us humans. When I was a teenager, if Mimi's body had not been thrown away, I could help bury him. However, now, I can't even help him bury me. Whenever I see his three babies, I will think of Mimi. I will cry. I can't get out of this shadow either.