498a mutual settlement risks and precautions

Hi, I have a case running for 498a, 406, DV. The parties went into meditation through court and the settlement amount was finalized and decided to be given in 2 equal parts. One part with settlement of the DV, 406, and 498a quash in high court. But the amount is to be given before the applications are filed on the basis of an agreement. Second part is will divorce mutual application. That too before getting the decree. What are the chances of thw girls party to back out in this case. Any suggestions on the precautions we need to take. Any help would be appreciated.