Prince Eric

In a world where magic can be used. You as the only count daughter and the have the strongest power of ice magic making you the fiance of prince Eric since you both were young. Eric is a crown prince and have been liking a commoner girl that have a healing power. A rare power. The girl seem cute naive and kind. Rumor have been spread that you been bullying her because Eric likes you and now you been accused of hitting her where you just by pass her and she suddenly fall on the ground by herself. What will you do?