No need for a return or onward ticket when applying for a 90 days Non-immigrant O Visa based on for example retirement, but you must show evidence of a paid ticket. BUT, now I'm not so sure anymore when the reason is visiting family.
As if an Indian citizen living in India would use or even have a bank account in "any" country. And he isn't asking about an extension,just a 60 days tourist visa or if possible a 90 days Non-immigrant O based on marriage.