Henrik,
Welcome to the Forum....
Henrik, i really wouldn't worry too much, you are in a unique position where you can decide to live in Denmark or China, for what ever period of time you choose. So as you say, try Denmark for 6 months and if all goes well all is fine, if not, shorten the period until you find the right compromise....
Besides, if she is not ''strong and Independent'' while in Denmark, it'll give you a chance to wear the trousers for a change!!! ...hahaha!!!! See, you'll find there's always some good, in all of life's little situations...lol!!
David......