Is it permissible for a woman to appoint a proxy for the stoning of the pillars for the obligatory Hajj?

Question:
Is it permissible for a woman to appoint a proxy for the stoning of the pillars out of fear of the crowd, given that her Hajj is obligatory? Or should she stone them herself at night? And what is the last time at night for this?

Answer:
It is obligatory for her to stone them herself. It is obligatory for a person to stone them. The wives of the Prophet (peace and blessings be upon him) stoned them, and the women stoned them with the Prophet (peace and blessings be upon him) at the appropriate times. The entire night is a time for stoning. The whole night is a time for stoning. The night of the festival, after the midpoint, and the night of the eleventh for the day of the festival, the entire night from its beginning to its end. The night of the twelfth for the day of the eleventh, and the night of the thirteenth for the day of the twelfth. As for the night of the fourteenth, it is not a place for stoning. It ends with the sunset of the day of the thirteenth.
Q: Regarding the stoning, is there an excuse if the woman is elderly?
The Shaykh: The elderly man, the elderly woman, and the sick person are excused.
Q: Is it possible for them to appoint a proxy?
The Shaykh: They may appoint someone to stone on their behalf.