@Arun Kumar Ji
Respectfully, I think you are encroaching on Mohan Kumars thread :), however, here are some pointers to reflect on before you make any decision.
How does a farmer keep his cows happy ? Milk them twice a day and ram them once a day. Did you service your cow before you went to the caw ?
You have been married less than a year of which she has been away for 3 months, so technically your co-habiting period is approx less than 6 months. Matters of love and marriage take time. The in-law interference needs to be dealt tactfully.
There is no gurentee that your next attempt with marriage will yeild any better result if you fail to understand the root cause of the discontent. I am not indicating that you are at fault or she is.
Did you ask yourself why the in-laws are asking her to come back and insist that you come to their place to pick her up ? Perhaps they want to feel good that their son-in-law is caring, respectful and loving of their daughter.
Try this- leave all this legal business aside. Go and stay at your wifes place. Be very passionate with your wife. Break the bed at night, become a "saand" and make her happy ? Let your love making noises embarass your in-laws. Walk around half-naked,let your dhoti speak that you are the man who was destined to fullfill their daughers desire. Chances are, the in-laws will ask their daughter in law to leave along with you. Also, if you service her well, she will not want to stay with her parents.
You are educated enough and smart enough to use the internet, research and find out the existance of LCI and post your grieviance here. You are smart indeed - perhaps your new wife is not. Try to understand her education,her background, her upbringing, her past life and work as a team. She may have fantasies - speak to her, experiment have fun. May be she wants to study or work and have her own identity and income. On the weekends, pack up from home and tour around - make love in some forest or hill top.
You have mentioned, "...secondly she is very demanding. i can't full fill all her unnecessary demands ". You have not mentioned what her demands are.
A one sided story