It was written in her marriage contract that she had received her mahr but she has not received it and she has started to resent her husband

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Check below answers in case you are looking for other related questions:
Can he rent the traditional set of jewellery and then return it to the jeweller in order to get married?
Her husband gave her a mahr of a car that he bought by means of riba; now he wants to take it back so he can buy another car by permissible means

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Related Answers:
A Christian woman has the right to ask for a dowry from her Muslim husband
If the dowry (mahr) is not stipulated, then the wife should have a dowry like that of her peers
He gave his wife her mahr: a ring that he bought with riba
Can he rent the traditional set of jewellery and then return it to the jeweller in order to get married?
Her husband gave her a mahr of a car that he bought by means of riba; now he wants to take it back so he can buy another car by permissible means

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