I remember certain parts, it's an animated movie, quite old.
Based around a little girl, taken from an orphanage, I believe she has a dog.
Her new owners force her down a well to look for a diamond, there cruel to her and, is it animals which plan to save her? I'm not sure.
Something happens, maybe while she's escaping and fireworks go off, the farther has a shotgun.
If anything else comes to mind I'll be sure to let you know.

Any ideas so far?

It sounds like The Rescuers: The Rescuers (1977) - IMDb (http://www.imdb.com/title/tt0076618/)

yeah it's the rescuers, it's epic, I love it ^_^

Yes!
Thanks so much for the fast accurate answer! :D

Take care, Gin.

You're welcome. I am glad I could help. :)