This is a “B” movie I think — the main actors are not well known.
A punky teen girl is sent away by her mother, I think. Maybe cuz the mom is fed up, or maybe is having problems of her own.
The girl is sent to live on a desolate ranch with a male relative, and gradually becomes a better person. The ranch is somehere in the West, like Wyoming, Montana, Nebraska, or the Dakotas. Very remote setting and a long way to the nearest town. She has chores on the ranch she doesn’t initially want to do and so on. I don’t remember if the ranch has cattle or horses, maybe both.
Good guess, but that’s not it. The male relative at the ranch isn’t her father — maybe an uncle. One other thing I remember is that in one of the opening scenes, the male relative is lying in bed w/o a shirt, and you can see that he has an umbilical hernia.