She has such a know-it-all personality that it's hard to have a conversation with her.
У нее такая всезнайская личность, что с ней тяжело вести разговор.
Definitions
A know-it-all personality refers to a person who acts as if they know everything, often offering unsolicited advice or information and rarely admitting to being wrong or lacking knowledge. This type of person can come across as arrogant or condescending to others.
