spirit that seperated me and my sister

my mom has talked about this situation to me quite a few times, so ive got the explanation down in my memory pretty well.

before i was born, my mom had been living with my father (they've divorced now) and taking care of my older sister, we'll call her B to keep things anonymous just in case. my mom had already figured out that she had gotten a spirit of some sorts attached to her, she had no idea what it looked like or who it was until B started spending time with it. at the time of this situation, B was about 5-6 years old, she was a toddler. the moment my mom found out more about the spirit was when B had been standing on the living room table with her arms out and she kept looking next to herself like she was copying someone. my mom took a picture with an older camera because she found the moment cute, though later on, you could see a little boy with a red hoodie very, very very subtly there in the picture doing the same action with B. B had created a bond with that spirit, they were close friends, up until i was born. B wasnt the only one capable of seeing said spirit. when i was born, i was able to see the spirit, but i had a reaction very far from my sisters. i screamed and cried every time i saw it, because my brain at that age couldnt proccess it as a human, so it went into a state of panic every time. for my own safety and to avoid trauma that early, my mom had to have a few people who genuinely deal with paranormal activity, not those dumbass 3am youtubers, and they removed the spirit from our home. even though B was young, she could understand the situation that took place, and she pinned the blame on me. she lost a good friend, all because the only other one who could see it that wasnt a device refused to proccess it as normality. the most shocking part of this entire story is that im now in highschool, B has a job, and we havent been close ever since. she still holds that grudge against me, even after years, she still holds a grudge over a spirit. its hard for me to explain that i lost my only sister because of a spirit that most people wont even believe in.