Man from Snowy River 2 (1988)

Revealing mistake: After Jim's horse is shot from under him while running down the really steep hill, and Jim later regains consciousness, before he turns and finds his horse dead, if you watch closely you can see the horse still breathing.

Harrison: You haven't been outside this house in days.
Jessica: I thought this is where you wanted me - looking decorative, waiting for the suitors to call.