What was the reason for the dispute between you two? The date of marriage mentioned in your question is irrelevant because ""got married on Dec 18th 2015 "" is yet to come. If she had taken away her things, in which yo had kept your personal cash, have you informed about this to her in your notice sent to her?, or whether have made a mention about this in the case you have filed in the court? If you have not done this, then why? Who do you think will believe your words now?, She will blindly refuse your contention. She will become more aggressive to file many more such criminal complaints against you to cover up this issue.
Please advise me to get easy bail and suggest to get out of this case
You have to file an application for AB before a sessions or high court in your state through a lawyer and then attend the inquiry session at police station if summoned for investigation. At any cost do not give your passport to the police even if they insist you to hand it over to them. No body have any right to ask your passport, even the court cannot confiscate your passport for this reason, the may ask you to deposit the same with it but cannot insist on it. That too this may happen during trial only and not during police investigation, because your wife side may play this gimmick pressurising police to collect your passport in order to not to allow you to travel back after investigation is over. One you are out on bail, the case can be challenged in the court during trial accordingly. If she has given false complaint, she may not be able to prosecute in a genuine way and sometimes she may even not attend the court during trial for deposing evidence.
As they have taken bed which contains my person cash, can I file any case on it?
During police investigation you can make this claim while giving a statement. Do not budge to any pressure by the police, they cannot force you to agree to any decision made unilaterally by her with the help of coercion by police.