I've been looking for this movie for years. I watched it over and over as a kid but don't remember the title or character names.

A little Asian girl is driven by her parents to work on some white people's farm for the summer or something. She is a moody brat at first but learns her lesson through the hard work I guess? I just remember certain flashes of the movie.

A little boy (her brother I think) was at some point injured by a train?

Gah! I need to find this movie!