Hi reddit! This is my first post on reddit &amp; on mobile too so sorry about any mistakes on formatting and stuff. It's quite short, I just wanted to see if people would think this would be justified if I did something in future if I ever see this girl again.

For context this happened in our sixth form working area - a pretty small space, just for the sixth formers to use. (I'm not sure what this would translate to for other countries, I think final year of highschool? Ages 16 - 18.) Not quite a library, no more than maybe 20 computers and a couple desks, arranged in what I guess you would call a U shape, with a big whiteboard at one end. It's not much but a good place to study/revise as sometimes our library is used for the younger classes. It can get quite busy up there and most of the time all of the computers are taken because of the amount of students.

I got up there early today so I could work on some english coursework, at 8:30, twenty minutes before lessons start. I didn't have any lessons for quite some time today so I figured I'd work on the coursework for a couple hours before then. 

I haven't been up there long until another student, probably from the year below me, year 12, puts her laptop on the desk next to me and starts fiddling with the wires underneath the desk. She unplugs the school computer from the main socket and starts using it to charge her laptop instead. She just leaves it there and walks off, probably to go to her lesson. I never saw her come back and I was there for a solid two hours, although the laptop was gone after I came back from quick break. 

It was a pretty expensive looking laptop, rose gold in colour, so I was pretty shocked that she just walked off, but I was also annoyed that she unplugged a school computer that someone else might need to use just to charge her laptop, which she could have done at home or some other time.

I ignored it, I'm not really a confrontational person, but I felt like unplugging it and moving it elsewhere. My friend suggested opening it up and trying to lock her out of her own laptop by messing around with the password but I felt that was a bit over the top. I suppose if people really needed to use the computer they could have moved it themselves or gone elsewhere but I felt it was pretty rude of her, especially when there are loads of other places she could have charged it, like the common room downstairs. 

Would I be an asshole if I unplugged it if this happened again? 