What should an American father do when his six year old British girl does not want to visit the United Sates before child custody ends at age 18? The child is very fearful if she comes back to the US she will be stuck since the dad is trying to change custody and she is afraid to be stuck here in the US.
This is why the British courts have ruled that she does not have to visit the United States before child custody end at age 18. Because the child is born in the UK and has never visited the United State, she is not subject to a US child custody order.
You can resolve visitation issue through the UK or USA court. This situation is possible for Russia, not for USA and UK, because both country are accepted Hague Convention 1980.