Intersubjectivity

So something weird happened to my friend few days ago.

The reason I'm writing this for her is because I have been trying to figure out what happened to her since she has no idea really.

Well anyway, this is what happened

My friend randomly started feeling intense emotions and started hearing thoughts that weren't her own. Like, she could hear her own thoughts but at the same time she could hear thoughts that she was sure wasn't her own, and the emotions she was feeling were horrible she said. She said she felt really depressed, even though she has been in a good mood the past week, and it made her want to almost kill herself.

She even cut herself on her arm, which is something she never does. She is a really good friend of mine and I positively know that she wouldn't do that and that something was wrong. She said she thought she was going insane while it was happening.

This is the second time she felt something like this but the previous time was not nearly as intense. One thing that was in common between the two occurrences, was that both times, she was thinking about speaking to the dead and also entities. The first was because she was thinking of her father, who died of a heart attack. The second was because I told her my friend was getting some poltergeist activity at his house and I was going to go check it out for him.

I told another one of my good friends about it and he said that he has heard similar stories, and even had experience with it. He told me about the term intersubjectivity, and that he experienced it with a few friends of his after doing some shrooms lol.

Being the researcher I am, I immediately looked it up and started researching. I found that it happens when two or more conscious minds meet up somehow and they share feelings, thoughts, and ideas. Sometimes the experiences are good, other times it is bad.

So, I was just wondering if anyone knew more about this subject? There is not a lot about it online and I would like to learn more about it and why it happened to my friend randomly like that.

I appreciate any comments and ideas given on it:)