My daughter wants to live with me her father instead of her mother she is 14 yrs old

You will have to go to court even if the mother agrees and have it changed by court order so it can stick.

You, the father will have to file a motion in court for a change in custody in court. He will have to show it is in the best interest of the child for this to be done. The child may ( or may not) be allowed to testify.