See the date.on which the incident alleged has to be seen if she has been staying away from 5 years and she has alleged a 5 year old date then the case itself looks fabricated at all this time.when she was in her parents home she could filed but this is after thought and to extort money.
Secondly if she was not there at your place right from second day then there is no possibility of domestic violence now either for that strong evidence in court has to be there from.your side or she has to be verified and contradicted in her cross examination.
Hire a good criminal lawyer the cross is always based on statement in chief all other fact and circumstances if she is lying all case she can be contradicted at many place in her own statements and court shall have knowledge to effect.
Regarding consumation of marriage you can contend same in your reply that there was no consumption of marriage later at stage in your evidence you can confirm same.
Further you just have to defend burden of proof is on wife and you think on prima facia discuss with your local lawyer there is nothing against you then go for quashing of dv case before HC gujarat high court recently quashed a dv proceeding contending to be quasi criminal proceeding the petition of quashing was decided.
http://www.livelaw.in/complaints-under-domestic-violence-act-can-be-quashed-invoking-section-482-crpc-gujarat-hc-db/