Can you tell another child to stop picking on your child? One psychologist says yes.
Summary: https://www.parents.com/parenting/better-parenting/advice/how-do-i-tell-another-child-to-stop-picking-on-my-child/.
Summary: https://www.parents.com/parenting/better-parenting/advice/how-do-i-tell-another-child-to-stop-picking-on-my-child/.