1. Should I will be allotted maintenance or not as she has given statement to near police that she is going on her own interest?
You may collect this evidence from the police either in person or through court and use it against her maintenance case and convince court that you had taken sufficient steps to bring her back but she adamantly refused to return and the proof for this is her own written statement before the local police station. This pleading may help you to get her maintenance petition dismissed.
2. Should I file hma sec 12 on ground of pregnant n no physical relationship.? Parallel with Sec 09
You should have filed the annulment petition before filing RCR, however even ow you can withdraw RCR and file a petition under section 12 giving reason that you came to know about her pregnancy through a third person only recently hence you should like seek nullity of marriage on the grounds of adulterous life before marriage and resultant pregnancy.
3 . is this case will be quashable at high court because no medical and no eyewitness?
You can take it up before high court, let hem decide.
4. How much time I will spend on this issue??
Cannot be predicted owing to various factors governing this issue.
5.personal loan ,car loan ,insurance premium, house rent and medical bill be considered while considering maintenance amount ???
Except personal loan, all other standard expenses can be taken into consideration based on the way it has been presented.