How can the wife force her husband to hold his responsibilities without divorce?

Hello,

My sister is married to an Indian who is working in Dubai for the last 6-7 years. He has been completely cut off from his wife and 1-year-old kid for the last 3 months.

He writes in emails that he doesn’t want to continue and that he is going to cancel my sister's residence visa.

What options do we have in this case?

My sister wants that he should continue the marriage but his activities do not suggest so.

Is he not liable for anything?

What rights do we have to pressurize him or in the future should we apply for abandonment/divorce in India or Dubai?