At the time of burial, the ruling is that woman’s hair shall be divided into two parts and put on her chest:
ويجعل شعرها ضفيرتين على صدرها فوق الدرع . (عالمكيري: 1/177)
However, if the hair of any woman is short naturally this ruling will not apply her, but it is unlawful and source of curse to cut hair short.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband