In case your "so called" wife or her parents are planning to file a 498A case on u, its sure that she do not want to continue relationship with u.
Under such situation she will refuse to come back to ur home and give stupid reasons for not coming. Also she might force u hard to come to her home.
Use this as an opportunity to collect evidences in ur support. Start recording all phone conversations urself and everytime request her politely to join u back in marital relationship.
In 90% cases she wont come back, and if ur sixth sense says she is trying to implicate u by coming back, ask her to sign an affidavit that she is coming back to u out of her own free will and she was no way harassed till date for dowry or any other reasons. This will help u keep ur self and all ur family safe from a wicked wife.