'Aishah performed ghusl for her nephews
Wives of the Prophet
وَحَدَّثَنِي عُبَيْدُ اللَّهِ بْنُ مُعَاذٍ الْعَنْبَرِيُّ، قَالَ حَدَّثَنَا أَبِي قَالَ، حَدَّثَنَا شُعْبَةُ، عَنْ أَبِي بَكْرِ بْنِ حَفْصٍ، عَنْ أَبِي سَلَمَةَ بْنِ عَبْدِ الرَّحْمَنِ، قَالَ دَخَلْتُ عَلَى عَائِشَةَ أَنَا وَأَخُوهَا، مِنَ الرَّضَاعَةِ فَسَأَلَهَا عَنْ غُسْلِ النَّبِيِّ، صلى الله عليه وسلم مِنَ الْجَنَابَةِ فَدَعَتْ بِإِنَاءٍ قَدْرِ الصَّاعِ فَاغْتَسَلَتْ وَبَيْنَنَا وَبَيْنَهَا سِتْرٌ وَأَفْرَغَتْ عَلَى رَأْسِهَا ثَلاَثًا . قَالَ وَكَانَ أَزْوَاجُ النَّبِيِّ صلى الله عليه وسلم يَأْخُذْنَ مِنْ رُءُوسِهِنَّ حَتَّى تَكُونَ كَالْوَفْرَةِ .
Abu Salamab. 'Abd al-Rahman reported: I along with the foster brother of 'A'isha went to her and he asked about the bath of the Apostle (ﷺ) because of sexual intercourse. She called for a vessel equal to a Sa' and she took a bath. and there was a curtain between us and her. She poured water on her head thrice and he (Abu Salama) said: The wives of the Apostle (ﷺ) collected hair on their heads and these lopped up to ears (and did not go beyond that).
Sahih Muslim 320 https://sunnah.com/muslim:320
أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، قَالَ حَدَّثَنَا خَالِدٌ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ أَبِي بَكْرِ بْنِ حَفْصٍ، سَمِعْتُ أَبَا سَلَمَةَ، يَقُولُ دَخَلْتُ عَلَى عَائِشَةَ - رضى الله عنها - وَأَخُوهَا مِنَ الرَّضَاعَةِ فَسَأَلَهَا عَنْ غُسْلِ النَّبِيِّ صلى الله عليه وسلم فَدَعَتْ بِإِنَاءٍ فِيهِ مَاءٌ قَدْرَ صَاعٍ وَسَتَرَتْ سِتْرًا فَاغْتَسَلَتْ فَأَفْرَغَتْ عَلَى رَأْسِهَا ثَلاَثًا .
It was narrated from Abu Bakr bin Hafs: "I heard Abu Salamah say: 'I entered upon 'Aishah and her foster-brother was with her. He asked her about the Ghusl of the Prophet (ﷺ). She called for a vessel in which was a Sa' of water, then she concealed herself and performed Ghusl and poured water over her head three times.'"