I differ to opinion of @ Need Justice
1. Your case is still pending in a Family Court, hence respondent (wife) has right to file and seek Interim Maintenance till case is decided. It is other matter based on materials (oral and documentary) before Court she may or she may not get interim maintenance. The proceeding under S. 24 of the Act is an original matter in the nature of such / a suit.
2. If voluntarily you want to pay Interim Maintenance then same need to be allowed from ld. Court.
3. Law cast obligation upon husband to maintain wife based on pari materia. If you want you can get allowed voluntary maintenance till current case is decided this is all so subjective.
4. S. 425 CrPC ply when any Criminal case against you or for calling any witnesses by a Magistrate Court and comes with certain pari materia and as of now both of you are contesting respective rights under Civil Family laws so reference to context situation is remote right now.
5. Case is called 'false' only if ld. Judge / Magistrate mentions so in a Judgment and without even no case on floor in any of the two Family Law dealing ld. Courts one should not call future alleged facts as ‘false’. Also lack of prosecution r/w evidences does not call a case simply ‘false’.
However any person has right to file a case against another, it is other matter if it sees through ‘admission stage’ or gets on Service mode which are all speculative discussions in context of your brief, hence no further reply on them.