498A used to be a serious offence till a decade ago. Now a days time has changed. After passing of many of the judgments by High Courts and Supreme Court, even Court knows that many of the females (wives) are misusing the law...Furthermore, the Courts have understood now and have started taking a lenient view at the first instance.
As far as ur query is concerned, what I could understand from your questions is that your case is at initial stage and it is not at the stage of evidence of Prosecution. Your wife and witnesses have to lead evidence.
You have not mentioned the nature of allegations as alleged by your wife in her complaint. If the allegations are serious in nature, there could be a problem prima-facie, and even if allegations are not serious in nature, you still have to face the trial after all. Your wife has to prove the allegations which she has made in her complaint, if she fails to prove it, no problem at all would be faced by you. PREPARE YOURSELF MENTALLY, BE STRONG AND SUPPORT AND DEFEND YOURSELF & YOUR FAMILY.
As far as question of bail is concerned, again allegations of your wife, made in her complaint, have to be seen. But since in your case chargesheet has already been filed and your case in pending trial before the Court, you have to follow the procedure and have to apply for regular bail before the trial court. You just have to formally submit the bail-bond alongwith surety.
Moreover, even if your wife does not come forward in Court for her statement/evidence, It is your benifit only. You can take the advantage of the same. I know there would be harrassment to you but brother .....honestly.... you still have to face the trial and you have no other remedy, practically. You can prove your wife wrong, in your defence evidence.
ALL THE BEST....