What is the Sharīʿah ruling on marrying a divorced woman after the divorce has occurred, knowing that she was not comfortable in her first marriage and still harbors feelings of love for another person before and after the marriage?

What you've presented isn't a specific question, but a comment on what you've mentioned:

- Love between a man and a non-mahram woman before marriage requires elaboration.

- The best thing for those in love is marriage.

- Your father should not have objected to your marriage to her merely because of the girl's kinship.

- The girl acted improperly by insisting on communicating with you while she was married.

- You did well by refusing to communicate with her, but you erred by telling her you loved her and inciting her to divorce, which is considered "takhbib" (incitement to marital discord) and is forbidden.

- You are obligated to perform sincere repentance.

- Passionate love can be treated.