I read most of the thread about teens traveling by themselves. My 16yo daughter will be traveling over to Paris from Texas, accompanied by her 27yo sister. My husband and I will already be in Europe, and will meet them in Paris (this will be in mid-June).
Do I need to notarize some document that big sis can carry in case someone questions if she is allowed to take her sister out of the country? This is something that had not occurred to me, but I don't want them to have any surprises en route.