It's wrong to be a brat.
Sally's mother was talking to a friend that she saw when they were at the mall.
Sally wants to ask her mother if she could go to the toy store.
Sally waits until her mother's friend leaves and then asks her mother if they can go to the toy store.
Sally interrupts her mother several times during their conversation to ask about the toy store.
Sally's mother takes her to the toy store and buys her a new doll.
After the friend leaves, Sally's mother gives her a stern lecture and says she can't go to the toy store.