“she” won’t even let me eat my lunch!!

okay so I was in grade 5 when this incident occurred….so it was our Library class (which was before our lunch break) and since I was one of the volunteers of library club, me along with 3 of my classmates used to stay back in the library to arrange books, keep them in respective shelves etc. Because of this, I was around 10-15 mins late for my lunch. My mom used to pack lunch for me. That day I had salad, rice and curry for lunch. When I dug the spoon in salad, I realized that someone had put PENCIL SHAVINGS in it!!! I didn’t eat the lunch…then the girl who sat behind me said, “I was told not to tell you this but it was actually done by XYZ (name of my best friend)”…..I was soooo sad that I talked to my parents about this and they asked me to cut ties with her….right now….I don’t even know where she is….but her absence since that day has made me better…