<p>I’m not sure if Quebec is international enough for your daughter (she will need a passport and a different language is spoken :)), but Domaine Forget often has excellent brass instructors. The instruction is in English. The calibre of student varies more than most other places that have such good instruction. I believe that the brass sessions are usually in June. Banff is also very good, has more competitive admissions, and does attract students from several countries, but it would not feel as international as Domaine.</p>