<p>I don’t know about a bed and breakfast, but I know that visitors can’t stay in the dorms for lodging unless it’s in the summer. There also isn’t a program set up where visitors can stay with a random student. Maybe if it’s someone they know, they’ll allow overnight visitors? I don’t know… maybe that’s something woth taking a look at.
Oh, and I visited Montreal just a week ago, but I was already 18 (and with my mom) so unfortunately, i can’t give advice about the whole 17-yr-old and without a parent situation. But I wish you and your D the best of luck! ^_^</p>