Lantern Hill (1989)

In 1935 Toronto, Jane Stuart's mother has taken ill, and the two of them have temporarily moved in with her rich, snobbish grandmother, where Jane is verbally abused and her mother bullied. Jane is forced into a private academy, in which the other girls tell her that her father, whom Jane believes to be dead, is actually alive. Soon after, Andrew Stuart sends word that he would like to meet his long-lost daughter, so Jane is sent by train to Bright River to stay with him, where she encounters an old mystery that she must help her father overcome, new friends, and the chance to bring her father and mother back together again.

Unfortunately the movie Lantern Hill is not yet available on HBO Max.