Do you think she's exaggerating?

Well, my friend lent me some P.E shorts because I was afraid of getting a detention for not having some so she lent me hers. I could of sworn i gave the shorts back to her after the lesson was over. Ok lets call my friend, Katie. (nOT REAL NAME) sooo... the next day my mum told me she put some shorts in my p.e bag, so i was like thanks;) Katie looked at me and said her shorts were missing. So i said i gave them back 2 her. She was like did you? And i was like yeah...So...after she was having a go at me so I just gave her my ones at the end of the lesson. This was like 3 weeks ago, and today she calls me to say...(my name is ella) ELLA, IM NOT HAPPY. NOT HAPPY. So i was like whaaat? She said the shorts i gave her were hers? WTF, she said they had her name on them. She was just like...i cant believe you tried 2 steal my shorts, whats her problem godd!! And now her mum thinks im some sort of criminal. Im soo ANGRY!! SHE IS REALLY PISSING ME off, shes just trying 2 start a bich fight!! I gave her back her shorts, and she still has a go at me!! GODD!! dont u tink shes just exaggerating, she could of just said thank you and left it at that.