protection of marriage

i did marriage with my girlfriend under the special marriage act 1954.my parents have no objection but her parents have.my wife and i have hidden this marriage from her parents. she us living in her parents home and i m in mine . at her home nobody knows abt this.our friends have told us to hide this for 3 month for protection of our marriage from any problem created by her parents. and then we are planing to leave home and reside outside.pls tell me about this law that really after 3 month we will have no problem if we will leave home . in such case her parents can file case of abduction. what i shud do before escaping home. i shud lodge an application in police station she is going with me by her own wishes or in court. that her parents cant torture us the basis of abduction charge . or sth else we shud do. we cant say her parents becz they cant accept this and will try to break this marriage by several hathkandas.