You shouldn't interuppt others.
Ellie's mother was on the phone when her friend asked her if she could sleep over.
Ellie wants to ask her mother if she could sleep over at her friend's house.
Ellie waits until her friend gets off the phone to ask her if she can go.
Ellie tugs at her mother's shirt and calls her name until she gets her attention.
Ellie's mother decides that she has behaved enough to go to her friend's house.
Ellie's mother is annoyed and doesn't let her go sleep over at her friend's house.