Lampang police were notified on Monday morning of a woman hanging from a nylon rope at a bus station.
The woman was identified as Kingkaew Duangthai, 68, by her brother, who said she had escaped from home and suffered from a mental condition.
Finding no evidence of physical assault, police put the case down as a suicide.
The family also does not find the death suspicious and wants the body back to conduct funeral rites.