Du'a to direct a mother's heart

اللَّهُمَّ مُصَرِّفَ الْقُلُوبِ صَرِّفْ قَلْبَهَا عَلَى طَاعَتِكَ

Allahumma Musarrifal-qulub, sarrif qalbaha 'ala ta'atik

O Allah, Turner of the hearts, direct her heart to Your obedience.

Adapted into the third person feminine from Ṣaḥīḥ Muslim 2654.