Could it be Black Magic!?

Asalam o alikum everyone! The story's a bit long and maybe Non-Muslims won't be able to relate or understand some terms I've used. But I request you to read it once and do let me know what do you think.

I'm a hostelite. Last weekend I went home and came back on Monday. My roomates told me something strange. They told me two nights ago the window of our room started making strange noise and was shaking. They checked inside out everything that could've shaked the window like maybe wind, or someone using any motor, machine near etc but it was unexplainable. The roomates got scared and called the warden. The warden then called our guard to look for things and maybe recite some surah etc. The guard recited some surah etc and the noise and shaking stopped. I didn't believe them at the moment. I thought maybe idk any physics phenomena could be happening behind or something idkkk because the story seemed a little bit exaggerated. I jokingly said "I don't believe it. You guys are overthinking it, it could be anything else". Guys I swear the moment I said this, the windows started shaking and making those noises again. We ran out of the room and called the guard again. He then came and said he thinks there are some other entities present here like Jinnaat. He recited some surahs again and after some time everything went back to normal.

My roomates then told me strange things be happening lately. They could feel the presence of someone in the room, footsteps or at night feeling like something heavy putting pressure on them. This is what they told me, of course I don't really believe them because this could be them overthinking or over exaggerating things. They told me few days ago the fan of our warden's room fell, luckily she was not in the room at the very moment. Also, the light bulb exploded and some lights here have been flickering lately. I don't really relate these to their jinn stories because this could be a coincidence as well.

The moment I started believing that maybe my roomates are not hallucinating or are being delusional is when the warden came to our room and started telling stories like how her husband can do magic, have ilam about these things, he have got himself a personal jin that helps him etc. She told us how her daughter died recently because someone used black magic on her etc. I got really scared. It felt so unreal, that a person you're basically living with has personally experienced such things which we don't hear about usually. After hearing her stories we thought maybe these things could be before her and now are affecting us, or maybe she do some kind of magic that could've gone wrong and now is affecting us. So we told our Hostel head about the warden and all the incidences that has happened. The head asked us to take a look at her room in her absence.

Today, when the warden went home, we went inside her room and -- there was this strange drawing of a cow type animal on her cupboard which was drawn with arabic letters, below it there was another page with circles and something written all over that page in arabic. We didn't read it because one of our room mate said it's not right to read such things so I don't know what that arabic was. We opened her drawer and there was this book. We didn't read it completely but there were things written like "There will come an end to this world etc" and some procedures (again we didn't read them) but some words like hold a knife in right hand and do this, some boxes made in it etc. We also found a box full of hair in her room (we can't say if those are her hair or someone else - a roomate told us that the warden once told her she keeps her fallen or cut hair in her room because people might use them in a bad way). Some roomates told us that they saw the warden writing some taweez etc as well. We took pictures of the drawings and sent them to our Hostel head. She told us that there are some people who firmly believe in taweez etc so maybe that's why she keeps such drawings in her room.

I'm really afraid right now. Idk if we're being delusional or what.

What do you guys think, is it black magic? Or people who believe in taweez etc make such drawings or do some procedures like these? And if yes, then can doing taweez etc attract other entities like jins or can harm people in any way?

Also please someone tell me if a person we don't know (in this case our warden) we're not blood related to them or anything, is into such things would it affect the people living around her in anyway? Because we haven't done anything, we're not even related, is it possible that her doings might be affecting us!?