She Caused Her Own Death, But She Repented Before Actually Dying

Question :

My step-sister, who has three children, was always having problems with her husband. First, her husband treated her viciously, showing no regard for her feelings. She had to leave him, so she went to live with her mother, who was also divorced and who also had a husband that treated her badly. I felt that I had to do something for my sister, so I rented an apartment for her and I too lived in. However, she continued to frequently visit her mother; her mother's husband forced her to give up her three children to their father. And she gave them up, but only to please her mother.

One day, after an argument took place between her and her father-in-law, she returned to the apartment in a miserable state, because of the hardships she faced and miserable because of the distance between herself and her children. She took out a bottle of pills from the refrigerator and swallowed them all, intending to kill herself. I took her to the hospital she was given treatment for a number of days, but it was already too late. Before she died, however, knowing that she had little time left on earth, she repented and frequently asked Allah Almighty to forgive her for what she did. She also asked us to invoke Alläh Almighty to forgive her. How does her position stand now? And may I give charity and perform Hajj on her behalf? Please consider, that I have, for the longest time, pledged to Allâh Almighty that I would do these deeds.

Answer:

As long as your sister repented before she died, it is hoped that she will be forgiven: repentance nullifies what comes before it, and the person who repents from sin is like a person who has no sin, this is based upon the Hadiths from the Prophet. . If you give charity on her behalf, or if you pray for her, she will benefit and you will be rewarded.

Also, you should fulfill all of the pledges you made, because Allâh Almighty praised those who fulfill them:
"They fulfill (their) vows, and they fear a Day whose evil will be wide-spreading"

The Prophet ﷺ said:
"Whoever vows to obey Allah should obey Him; whoever vows to disobey Allah should not disobey Him."

Source:
Ibn Baz
Fatawa Islamiyah, Vol. 7 Pages 257-258