My son has a court order stating his daughter lives with him. His exwife has limited access, twice a week with no overnights. Her parents have stated they will pick the child up from school when they want to although my son does not want them to have contact atm. What can he do to prevent this? Can he phone the police? She is 14 so not a young child. She would go with them willingly because it is difficult for her to say no to them. She understands why her Dad doesn't want her to see them but she is in a difficult position.