Hua Jai Rua Puang (หัวใจเรือพ่วง) (2013)

Pat is a young woman who is raising her niece and nephew after her older sister goes to prison. When her niece Lan begins to have a relationship with an older man, Pat disapproves of their courtship– believing he will hurt her young niece. If someone else want to give another review just write it under the other synopsis.