As an employer, you will have to approve such leaves. However the employee will have to submit supportive medical documents to support her leaves. In case where the employee does not have any paid leaves, such leaves will be considered to be without pay. The employee will be entitled to the leaves of 26 weeks (8 weeks prior to delivery and 18 weeks post delivery) as per the act, for which she if to be paid in full. Post this leave period, the doctor, if still advice the employee to take rest, as an employer you will have to grant her leaves; provided medical documents are submitted for this as well. If permissible, you can allow her to work from home during this duration.
Other members, please do correct me if I am wrong as I am also novice to laws and compliance.