Wants to marry a girl who has repented of her past but his mother does not approve
Question

                AS SALAAMU ALAIKUM
 I am interested in marrying this sister, that my mother doesn't approve
      off. My mother doesn't feel she is the right one for me. I am a virgin and the sister has
      a long sexual history. But I can tell that she has changed her behaviors and is practicing
      this deen better than i am. I would like to know, according to the Quran and Sunnah, is it
      a good idea to marry this sister.
I am humbly awaiting your response
    AS SALAAMU ALAIKUM
Praise be to Allah.You should treat your mother respectfully, and try to persuade her to
    agree to your marrying this girl who has repented and is practising her religion. But if
    your mother does not agree, and you cannot be patient and you fear that you will fall into
    sin if you do not marry her, then it is still permissible for you to marry her. And Allaah
    is the source of strength.