What is the ruling on an unmarried girl imagining a husband, family, and children without intercourse, and does the discharge of fluid necessitate ghusl, and how does this align with the principle that sin is what wavers in the soul, despite a previous fatwa permitting it?

There is no harm for an unmarried girl to imagine she has a husband, a family, and children, as long as it does not lead to the arousal of lust. It is forbidden to intentionally imagine sexual relations with someone who is not her husband. The dislike (karahah) that makes something a sin is religious dislike, meaning the fear of it being a sin, and not dislike for moral reasons. A distinction must be made between permissible sexual fantasies between spouses and forbidden sexual fantasies for a single woman. As for the fluid that exits, its ruling differs depending on its type (mani or madhy) and whether it exits with pleasure or without pleasure.