She was a Raafidi, then Allah blessed her with guidance but her family will not let her marry a Sunni man
Question

                I am a 32-year-old woman and I have not been married before. Now a righteous man has come to propose to me, but my family are rejecting this man because he is Sunni. Please note that my family are Shi’ah, but I have been a Sunni since a young age. Is it permissible for me to marry without the approval of my family or my mother?.
Praise be to Allah.
    Firstly: 

    We praise Allah 
    for having brought you out from darkness to light and having guided you to 
    the truth. This is a great blessing, so strive to give thanks for it by 
    adhering to it, calling others to it and appreciating it. 

    Secondly: 

    A woman does not 
    have the right to give herself in marriage. Rather it is essential that she 
    be given in marriage by her guardian; otherwise her marriage contract is 
    invalid. This is the view of the majority of scholars, and indeed no 
    difference of opinion concerning that is known among the Sahaabah (may Allah 
    be pleased with them). 

    If the situation 
    is as you say, and there is no one of your family who is following the 
    correct beliefs, and your family believe that the Qur'aan is distorted, that 
    the Sahaabah are disbelievers and their imams are infallible, and they 
    slander ‘Aa’ishah and follow other beliefs that constitute kufr, and they 
    refuse to let you marry a righteous man who is a Sunni, then their 
    guardianship of you is waived, because of the difference in religion between 
    you and them on the one hand, and their preventing you from marrying a 
    compatible suitor on the other. Either one of these reasons is sufficient to 
    waive their guardianship of you with regard to your marriage. 

    Based on that, you 
    can get married without their consent. Refer your case to the shar’i judge 
    so that he may arrange your marriage. If there is no shar’i judge, then a 
    man of good character among the Muslims in your country, who has some 
    standing and position of authority over the Muslims, may arrange your 
    marriage. 

    We have discussed 
    that in the answer to question number
    7989. 

    And Allah knows best.