Howl’s Moving Castle

I can watch the movie today. To be honest, I didn't have a high expectation to this movie before, because there are 2 reasons. Firstly, I couldn't believe Kimu-taku could play the voice actor well, and I don't like the former film, "Spirited Away".
However, it's quite interesting! Even if I cannot understand some stories, all characters are quite cute and charming, Kimu-taku plays very well and story is really interesting.

I cannot understand one thing. Why the heroine's age change? What dose it depend on? If someone know that, please tell me!