Congratulations on your new Basset. Just one word re stubborn. Unfortunately this breed has managed to be called this but when you get stubborn, you need to adjust your approach to making them think what you want was their idea all along! Get inside their head.
What is a 'European Basset'? Did she come from Europe because as the world has shrunk, most Bassets these days carry bloodlines from right across the world. And most of today's 'European' Bassets actually originally came from UK exports (most to Germany and Italy from the major UK kennels).