May Allah ta'ala forgive her and shower her with His mercy.
May Allah ta'ala make her resting a noble one and expand her abode.
May Allah ta'ala wash her with the purest of water and cleanse her of sin and mistakes like a new garment.
O Allah if she was righteous, increase her in reward.
And if she was other than that, then overlook her shortcomings. Ameen.
May her grave be a garden from the gardens of paradise! Ameen.
May we all be entered into Jannah and saved from the Fire, Ameen
Abu Hurayrah radiyAllaahu 'anha narrated that the Prophet sal Allaahu 'alayhi wa sallam said:
"Oh Allaah! You are her Sustainer, You are her Creator, You provided her with sustenance, guided her to Islam, caused her to die, and You best know her secret and public life. We plead to You on her behalf to forgive her sins." - Aameen
And may Allah s.w.t bless us all - the Muslim Ummah
TO ALLAH WE BELONG, AND TO HIM IS OUR RETURN
Obedience and respect towards your mother is a very important duty in Islam and is similar to performing Salaah and keeping fast. To hurt your mother in any way is the second biggest sin and those who commit this evil sin will be harshly punished by Allah in the hereafter or maybe even in this world!