You do not need to use translation files for “pages”. Just created two copies of each “page” – one for only Danish, and one for only US American. The titles and the content can be correct for each language then.
Why do you say “I can not use both”? I do not understand what problem that can be.
I can not use language file and userdefined translation and I did try long time ago to use this module.
(the file is enclosed and you can see how complex I have made it)
admin and owner of a user customized version of kiwitrees (contain 3 family trees)