Strange dreams

I don't know if this has happened to anyone else, but a while ago, when I was about 7 or 8 years old, I had a sister who had a doll and she loved taking it everywhere; it was like her best friend. I even told her things sometimes, but my parents didn't take it seriously because they thought she was an imaginary friend or something. Personally, I felt a strange vibe whenever I was near her.After a few months, I started waking up at night to a noise, so I got up and turned to look at the doll's crib. I didn't see it, so I deduced that my sister had it with her. So I decided to go towards the noise and I found the doll lying on the floor As soon as I saw it, I ran straight to my room and locked the door. In the morning, I told my mom what I saw, but she said maybe my sister dropped it, so I didn't think much of it. A few days later, I woke up again in the night to a loud noise, so I froze in fear with the blanket covering my head. I didn't sleep at all that night. In the morning, I decided I saw it was the doll, so I got scared and told my parents to please burn it because I couldn't sleep from being afraid of having it near me, so my parents burned it. And they told my sister that maybe she had lost it somewhere. 

After that, I started to be afraid of dolls and the dark.