Will the questioner enter Hell and be punished by Allah in the grave after repenting from adultery, and what should she do to clear herself of sins?

If someone repents from the sin of adultery or any other sin, Allah forgives them concerning His own right, but the rights of human beings remain, to be claimed in the Hereafter, unless their owners pardon them. If a married woman commits adultery, her husband has a right over her which he will claim on the Day of Judgment, unless he pardons her. Therefore, she should increase her good deeds. As for Allah bringing spouses together in the Hereafter, if the intention is for the fulfillment of rights, then the answer is: yes. If the intention is for marriage, then a woman will be with her last husband if they all enter Paradise. Sincere repentance erases what came before it, and one who repents from a sin is like one who has no sin.