Does the wife forfeit her right to the full deferred dower if the agreed-upon khul' (divorce at the wife's instance) did not take place with her husband, and the husband subsequently divorced her by his sole will?

If the husband does not utter the words of khul' (divorce initiated by the wife), then divorce does not occur according to many scholars, and it is merely a promise that is not binding on him. In this case, the wife has the right to receive the full amount of her deferred dowry as agreed upon.