Dear Sachin,
I am not a qualified professional and my comments are out of my personal experiences only..
1. Ask her to disclose her income on oath in court. You have to invest one day to find where is she working (by working as a detective) and than your counsel can send a legal notice to her office for her salary.
2. Although one who has left the company of his/her spouse without any reason does not get any maitenance, however in your case since you have filled for RCR she would have filled Sec-24 for forcing her into legal procedings. So in this case you have to pay maintenance/legal expenses or she can even ask the Hon. court to stop RCR proceedings till maintenance petition is not disposed.
3. Her present income and your present income will deciede the maintenance, however since she is capable to earn herself court may be lenient and award a modest amount if she is not working presently.
4. Stredhan if in liquid form (FD, cash, securities etc) will be her property. But understand it is not her income, just property, which you should defintly put in front of court and try smartlly to prove it. This will help you later if god forbid you file for a divorce.
5. She can ask anything, court will analyse both incomes and will award a logical judgement.
Below are few points which may sound little funny or waste but I am sure they will help you,
a. Dont wear flasshy, branded clothes/shoes/watch, be very very normal...The Hon Judge notices everything.
b. Be very polite and soft, never loose your temper.
c. Never reach late on your date.
d. Respect and oblige to everything your Judge speaks, never interupt in proceedings and if you want to say something first take permission from Hon Judge.
e. Dont lie on things which can be proved.
Try to convince your wife yaar, all this is very painfull and depressing...Best of luck.
There are lots of learned members who will surely help you better..