First please check whether her Company fall under the purview of Maternity Benefit Act.
"The Maternity Benefit Act 1961 protects the employment of women during the time of her maternity and entitles her of a ‘maternity benefit’ – i.e. full paid absence from work – to take care for her child. The act is applicable to all establishments employing 10 or more employees. "
"As per the Act, to be eligible for maternity benefit, a woman must have been working as an employee in an establishment for a period of at least 80 days in the past 12 months. Payment during the leave period is based on the average daily wage for the period of actual absence."
If she fulfill above criteria she is eligible for 182 days leave.
If she is covered under ESI, she can claim the benefit through ESI.