There is a movie about a girl entering into a fantasy land. And then after one point starting to forget her real life memories. The weird thing that I do remember very vividly was that a white big size duck was helping her. Any ideas?

Could it be Magic in the Mirror: Fowl Play?

Could it be Magic in the Mirror: Fowl Play?

I don't think so, the girl in the movie I remember was older, in her early teens... and there was just one duck that was helping or guiding her. But thanks for the answer!