Apart from the suggestions above, have you tried to identify the reasons why women have left the company from their exit interviews? You may work on the reasons given, such as pay package, profile, promotions, professional growth, facilities, infrastructure, etc. That will help you.
Women-Specific Programs
Another point, are all employees women? If so, you may initiate a few programs that are women-specific, for example:
1. Organize lectures every quarter on women's health.
2. Lectures on maintaining work-life balance.
3. Expert guidance on raising children.
4. Knowledge on financial management.
5. Celebrations, games, small picnics, family get-togethers.
Hope it helps!
Best regards,
Vaishalee Parkhi