If I am correct what you want to know is that, for a male who has domestic violence charges pending against him in San Jose, how can the complaining witness's statements/pleadings/charges in an Indian Court be used as impeachment in the San Jose case?
My answer is you need to consult with and retain an attorney in the San Jose area because foreign jurisdictions present special issues along with the obvious, even if a witness were to be able to help attack her credibility he or she would need to be here in order to do so. I do not believe that this situation as you describe it lends itself to proceeding without an attorney. You can do a search on AVVO and I believe that both Mr. Dinkar and Puri are in your area and frequently contribute to this forum. good luck.