Granddaughter of a Village Witch and Rituals with Grave Soil

As a kid I was dumped in the village for the summer (though sometimes in winter too). When this story started I was about 13. I met this one girl, she was 13 too. I see she's pretty and cheerful, but the villagers don't hang out with her. I ask my buddies, like why is that? And they tell me she's supposedly the granddaughter of the village witch. There was this one old woman living there, everyone considered her a witch and was afraid of her. And I hadn't seen this girl before because she used to only come to her grandma's during winter or autumn holidays.

I started talking to her, she turned out to be cool to talk to. But my buddies started ignoring me a lot, especially when I hung out with her. And I decided to ask from a distance, like is it true they're witches, her and her grandma? She laughed and said her grandma is definitely a witch, but she's not. Though her grandma offered to share part of her power. She wanted her to help her charm and heal animals, but she got scared and didn't agree. However, she sometimes does certain errands for her grandma. She promised to take me along sometime when she does errands. A few times we just picked certain herbs together, and a couple times we went to the cemetery for soil from graves. And sometimes you had to get soil from a fresh grave, and sometimes from an old one. There was also a strange incident. Around one in the morning (we used to walk around the village for a long time, sometimes till morning), we came to a crossroads outside the village. There we had to bury a strange little bag. I wanted to see what was in it, but my friend wouldn't let me, said grandma forbade it. That little bag stank really bad, of some herbs and, it seemed to me, earthworms. We hung out for about two years, and then our paths diverged. For me it was already computer clubs and drinking, so I didn't want to go to the village. She didn't seem to come to her grandma's either.

I met her when I was already 25. I came for my grandpa's funeral. And she was in the village. What a beauty she'd become. She ran up to me, we started hugging, reminiscing about childhood. Anyway, we got to talking and she tells me she came here for the last time. She won't come anymore because she's afraid of her grandma. Supposedly she wants to take over her body. She gave me a few examples. Her grandma constantly tried to make her drink either some tea or a decoction, like for women's health. After that she'd get really sleepy. She'd lie down on the bed and fall asleep. But sometimes she'd wake up, like in grandma's room in grandma's own body. She couldn't move, but sometimes, for example, she managed to raise her hand and the hand was her grandma's, old and wrinkled. She also heard how grandma walked around the house in her body. And later she even found signs of it, like a splinter in her leg, something else, I don't remember, small bruises or something, scrapes, etc. And once she entered the house and heard her grandma talking to someone. That someone answered in a male voice and said that this body (meaning probably the granddaughter's body) suits her perfectly. But when she went into the room, there was no one there except grandma. I.e., her interlocutor wasn't there. And later that girl remembered that grandma in childhood told her how some powerful sorcerers "jumped" so to speak from body to body. So she got scared and I never saw her in the village again. The only thing I know is that she seems to be living abroad now. That's the story.

What do you say, witch-rollback? Is body transfer really possible with rituals/magic?