Does God forgive sins and major transgressions after sincere repentance, and does the questioner deserve to marry a pious young man after her past?

We congratulate the questioner on her repentance and rectitude, affirming that Allah's acceptance of His servant's repentance is a sign of His love and contentment with her. We advise her to have a good opinion of Allah and not to despair of His mercy, and to beware of Satan's whisperings that try to instill despondency. We recommend being diligent in seeking beneficial knowledge, performing righteous deeds, associating with righteous women, and spreading good. We affirm that the questioner's past does not legally prevent her from marrying a pious young man.