Are the things a father bought for his daughter from haram bank interest considered unlawful, and is she sinful for that, knowing that the father stopped doing so later?

It is not permissible for a Muslim to deposit their money in an interest-based bank in exchange for interest. Whoever does so, knowing its prohibition, must repent and dispose of the interest by spending it on the welfare of Muslims, such as the poor, the needy, and charitable hospitals.

If the father put usurious interest into his daughter's trousseau while knowing its prohibition, he must extract the equivalent of this unlawful interest.

If the father was unaware of the prohibition of dealing with interest-based banks, then what he received before knowing the prohibition is lawful for him, based on the Almighty's saying: "So whoever receives an admonition from his Lord and desists, he may have what has already passed, and his affair is with Allah."

If the father does not extract the amount he spent on the trousseau from usurious interest, then the daughter must give charity equivalent to what was put into her trousseau or give the trousseau itself in charity if it is still intact.