Christmas Movie in the 80's
I am looking to find out the name of a movie that came out in the 1980's - I believe. Anyway, it takes place around Christmas time, there are 2 kids - a brother & a sister - and their Dad is killed during a bank robbery, they are accidentally kidnapped by the robber when he steals their car, but no harm comes to them. They want to send a letter to Santa but their Mom doesn't "believe". I think there might even be an angel involved & at the end I'm pretty sure it turns out the Dad is alive. It's very fuzzy as I went to the movies to see it, that's why I'm pretty sure it was the 80's... so I was very young.
I have tried to find this movie for so long now but nobody every knows what I'm talking about. Please help!!