Problems at the Tri-Wizard Tournament

(Y/N) and the 10th Doctor have been traveling together for a while now, but what if the TARDIS takes them to Hogwarts. (Y/N) is over the moon for being at a place she never thought she'd go to, but it gets a whole lot better! Because she is about to meet all of her favourite people and spend a year at Hogwarts with them! How will everyone react to having these strangers in their school? Will they be able. to prevent the problems that will come? Or will The Doctor being their bring even more problems and enemies?