HMOP - Section 13(1)(ia) & (ib)

Hi All, My ex-wife has filled for a divorce in India at a local court under HMOP - Section 13(1)(ia) & (ib) on the ground of cruelty and desertion. However my marriage was dissolved in an Australian Court after proving Irretrievable break down of marriage. My ex-wife was living with me in Australia for 5 months after her successful grant of spouse visa, due to home sickness and unable to adjust with lifestyle changes of western world she set off to India. After yearlong futile dialogues she was adamant that she do not want to return to Australia and I withdrew her sponsorship for her visa. As i am a citizen of Australia, i filed for a divorce in Australia. The divorce notice was served to her via post and email; for which she remained mute. She then sent a threatening advocate notice stating that she was a victim of dowry harassment and domestic violence and i will be arrested if i do not withdraw the case in Australia. Since she did not appeal, the marriage was dissolved in Australia and a decree was passed. its been 2years now. Now my ex-wife has applied for a divorce in under Section 13(1)(ia) & (ib) of HMA, with baseless allegations to dissolve the marriage and award costs in favour of her. A notice was served through her counsel via email to me. I have some few doubts before i proceed with this case, as i have not found any conclusive answers from the advocates i spoke in India. Do i have to personally appear every time in front of the court and deny all the allegations? Can i produce the divorce decree from Australia and mention that my ex-wife chooses not to respond to the notice? She has not filled for any maintenance or alimony case separately, if this case has to be awarded in her favour, can she file a fresh maintenance or alimony petition? (PS- She is a software engineer and an engineering graduate) Is there any kind of one time alimony that I have to give her? Any help/response is highly appreciated and thanks in advance. Regards, Hari