Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information first
Where doe she wish to take her and for how long?
Is he named on the birth certificate/
In fact neither of them can take the child out of the country without the agreement of the other party or an order from the Court
Given the age of the child and the fact that he has her just one night a week there is no basis on which her ex could obtain a Court Order for a holiday such as this in the next couple of years.
If she fears that he will still try and take her pit of the country then she can apply for a Prohibited Steps Order to prevent him.
IN any event the best option is to try and discuss matters with him and agree a Parenting Plan using Family Mediation
I hope that this is of assistance - please ask if you need further details
You are most welcome