If the divorce has occurred before consummating the marriage, the gift-giver has the right to have the gifts returned. If they have consummated the marriage, the gift-giver has the right to have those gifts returned to him which have not been altered, like jewelry. If the gifts have been altered, like if the cloth is tailored, they do not have to be returned.
The subject of the vow is the correct recitation in the normal way based on the information the person possess. If he paid attention to the mistake during the recitation, then he should correct them. If he paid attention to the mistakes after reciting for some time or after finishing the recitation, then it is not obligated to repeat the recitation correctly although it is better the repeat the verse that was read incorrectly by itself.