My daughter is a single mom and needs to get her ex-husbands permission to sail out of the US. Is there some kind of a form letter we can use as a reference to create a document for execution? I don't want it to appear as an agreement which requires a lawyers approval, but I'm sure some basic acknowledgments need to be part of it. What have other's done in simular situations? Is there a standard letter we can use? Your thoughts on this would be greatly appreciated.