Her parents' attitude only 'confirmed' [='strengthened, reinforced'] her resolve to get her own apartment.
We have a reservation for you for tomorrow night. Please call to 'confirm'.
The dentist's office called to 'confirm' your appointment for tomorrow.
(..) We were very worried. Who are you? This is Sergeant Sullivan. I'm taking over Queenan's unit. Let me talk to Dignam to confirm it. ...is on a leave of absence. He's very upset. We're all very upset. I think the best thing would be for you to come in. We need you to come in. Can you come in? Police confirm the body of the man found dead... ...in the Fenway marshes yesterday... ...is that of Timothy Delahunt, an undercover policeman for... (..)2006 The Departed