This may be set in china or somewhere in Asia.
A family had to flee their town because of an invasion or some emergency. They may be running from people searching for them.
They are gone for months, maybe even a year. I remember a horrible husband forcing two women, one his wife, to pull a cart up a mountain.
A young woman is separated from her husband and travels with them. The husband or boyfriend of this young woman searched for her for months and assumed she died.
They find other families in the mountains, winter comes and people are starving and freezing. The quiet weak son dies and the father beats his wife after he finds out.
Someone becomes pregnant and is devastated.
A woman commits suicide and stumbles down a cliff.
They eventually make it back to their home and the young woman is reunited with her husband or boyfriend. She is dirty and filthy and embarrassed but he still loves her. The other man wants payment for her.