Need help in court reg.Child divestment-Stockholm

Hello to Stockholm Community,

friend of mine need help- he has 3 kids(age from 2-4years old) with swedish Lady, but she left Spain without his permit and won't bring kids back to him to Spain.

Lawyers in Spain & Stockholm are already working on this child abduction/ divestment, but he is looking for an neutral person who can help him with the whole situation mainly because of language barrier.

He will have court process in Stockholm in October and is looking for someone who can help him to manage this emotional situation- someone who speak spanish or portuguese plus english and swedish. He spend already a fortune for lawyers...and is looking for a bit support.

Thank you in Advance

Raimonda