Does the wife mentioned in the question – who is seeking divorce for frivolous reasons and mistreating her husband and his family – deserve the Shabka (engagement gift), the deferred Mahr (dowry), the wedding dress, and the gifts, knowing that the agreed-upon Mahr was 50,0 and the value of the Shabka was 20,0?

If a man divorces his wife without stipulating the forfeiture of any right, then she is entitled to all the rights of a divorcée. He has no right to withhold her dower (mahr) or anything he gifted her. However, if the wife requests a divorce without a valid reason, or if she is disobedient (nashiz) and he restricts her until she seeks divorce, then he can refuse to divorce her until she forfeits some of her rights to him.