Should she do Hajj and give charity on behalf of her mother who did not pray?
Question

                Is it permissible for a daughter to do Hajj and give charity on behalf of her deceased mother, knowing that the mother did not pray when she was alive?.
Praise be to Allah.
    The one who does not pray because he denies that it is 
    obligatory is a kaafir according to scholarly consensus. The one who does 
    not pray out of negligence and laziness is a kaafir according to the more 
    correct of the two scholarly opinions, because the Prophet  (peace and 
    blessings of Allaah be upon him) said: “The covenant that stands between us 
    and them is prayer; whoever gives it up is a kaafir.” And there is other 
    evidence to that effect from the Qur’aan and Sunnah. Based on that, it is 
    not permissible to do Hajj or give charity on behalf of someone who has died 
    and did not pray, just as it is not permissible to do Hajj and give charity 
    on behalf of any other kaafir. 

    And Allaah is the Source of strength. May Allaah send 
    blessings and peace upon our Prophet Muhammad and his family and companions. 
    End quote. 

    Standing Committee for Academic Research and Issuing Fatwas 

    Shaykh ‘Abd al-‘Azeez ibn Baaz, Shaykh ‘Abd al-Razzaaq 
    ‘Afeefi, Shaykh ‘Abd-Allaah ibn Qa’ood.