My mom's private clinic (gynecology/obstetrics) has been emptying because of the crisis. What can she do to recover some business?

Mom doesn’t do medicine for the money, I think she never has. She hasn’t raised prices for about 10 or 15 years perhaps. But the financial crisis seems to have made everyone broke and people just can’t pay her consultations anymore. Some days she has zero appointments and it’s really costing her, not only financially. She is wonderful, really humane doctor as far as feedback reaches me even from third parties. But business (although Mom never called it such a thing) has been decreasing as I’ve explained. Any ideas to bring back more work to her? Thanks.

P.S: this is in Portugal where we have a National Health Service where people are flocking to these days even though the wait lists are growing and growing. There are people with health insurance but when she had the opportunity Mom did not apply to be partners with any insurance companies and when the crisis started to take hold they wouldn’t even get back to her anymore.