Was I Willed To My Abilities?

My name is Kennedy. This is the second story that I have written on this site. Anyway, I have questions. I'll start at my relatives. When I was about 7 years old I was told that one of my great grandparents was a witch. I didn't know if I was just being told this for laughs or not at the time but now I am believing it. My grandmother lived about 4 or 5 generations ago, 1800's I'd say. My actual grandmother (my mom's mother) was the one to tell me about this, saying that before my great grandmother was killed, she wrote a will, not just any will, like, I will my blah blah blah to so and so, but a will that was leaving her abilities to her descendants, my grandma said that she willed all of her abilities to one person, her great great great (No idea how many greats) Granddaughter. I was the first girl to be born into that said generation, and here I am seeing ghosts, auras, and making air hockey tables give me extra games.

I have two friends that have similar abilities to what I do, but mine seem to be less modern, and more complex, and stronger. They have both proved their abilities to me

My friend, we'll call her C can see shadow people and she draws them like a magnet, her mother died when C was only two days old so she was raised in a house with her father and grandmother, she has said to have seen her mother several times since her death, she can described her perfectly. And can tell her father stories of their dates, ones that happened and she had never heard of, ones that he can prove to be valid.

My other friend, Rem, she can communicate with spirits, including my brother who died when he was 19 in a car accident 10 years ago. Rem can make things happen... She can be sitting in a spot of grass, no cloud in sight, no trees in sight nothing, but she can ask the dead, somebody, strongly close to her at that moment, to make a sound, to knock on wood or something, you can hear it, even though there is nothing around to make that sound. Crazy stuff

I have been to physics and doctors, I was put into therapy, and out of a lot of things that doctors said to me, I was diagnosed with Aura, and Clairvoyance... They said that the rest was so strange that it couldn't be categorized. That didn't surprise me, everything that I can so is from back in the 1800's. I have "had visions" of someone similar to myself, but older, and looking different, in a dress, like back in the 1800's killing a man, stabbing him in the back with a curved dagger, laughing as the knife hits each rib, I could feel it hit each rib, I could feel the warm blood on my hand, I could hear the snapping of his bones, and I could feel him losing power every second, taking joy in it. Savoring it. As he dropped to his knees, I pulled the dagger out of him, licked the blood and smiled with a scary look of possession and satisfaction in my eyes... Turned around and saw my child looking at me, 6 years old maybe, a boy... With such horror in his eyes. My laughter immediately stopped... And I started to cry. Not to long after I woke up from that "vision" To find myself standing in my back yard. No idea how I got there... It wasn't a dream, as I said earlier, it was a "vision" but still. I don't know what to think about it... I went to my grandmothers house that afternoon determined to find a photo of my great great grandmother... I found one... Identical to who I saw myself as... What do I do? Or... Just tell me something... Just help me figure SOMETHING out. By the way... I was wearing the great great grandmothers bracelet when this vision thing happened... I haven't wore it since, and nothing has happened since I stopped wearing it. Explanations would be great.:/