OZBOLAMDE :Novel With Language Change

I once had an idea for a novel (which I never wrote) in which a princess
married a foreign prince and (as was often historically the case) moved to his
kingdom and had to learn the language; the intent was that the language lessons
would actually be incorporated into the novel (like the Henry V/Catharine of
Valois scenes in Shakespeare's Henry V, only much more so) until lengthy
passages were actually in the conlang language of the prince's realm.
John Leland