A Muslim woman killed another fifty years ago and then dying after a long time

Q: A woman attacked a Muslim woman and killed her fifty years ago, and the killer died a long time after the incident. Can the daughter of the killer offer the Kaffarah (expiation) for the act of her mother by freeing slaves or fasting? Waiting for your answer, and may Allah protect and support you!

A: There is no Kaffarah for premeditated murder. However, the daughter of the killer should supplicate to Allah for her and give Sadaqah (voluntary charity) on her behalf. Perhaps, Allah will benefit the killer from these deeds. (Part No. 21; Page No. 431) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.