It's only money

Today was Student Store day at school. It's one of Anna's favorite days because she can buy erasers and trinkets (which she'll promptly lose or break). Today Anna showed up at Student Store with a $50 bill. Thankfully, Student Store doesn't accept bills higher than a $5, and they returned the money to her. So, Anna gave the $50 to her classmate. Thankfully, her classmate's mom knows our phone number.