Hi Bilal,
Yes, you can mutually settle both cases if both parties agree, and no financial exchange is involved. Since 498A IPC is a non-compoundable offense, simply withdrawing it is not possible. Instead, follow this legal process:
Your wife should file a petition in the High Court under Section 482 CrPC for quashing the 498A case based on the settlement. The High Court can quash the FIR if both parties state that they have resolved the matter amicably. You should give an affidavit supporting the quashing in court.
For your case under Sections 323, 324, 504, and 506 IPC, you can withdraw the complaint before the trial court. Since these are compoundable offenses, you and the accused can file a compromise petition before the magistrate, and the court will allow withdrawal.
Ensure that both settlements happen simultaneously to avoid any risk of one party backing out. It is best to draft a written agreement, signed by both parties, and submit it before the court along with settlement applications.
For legal drafting and representation, reach out to me at adv.vishesh@icloud.com.