As a lawyer, what advice would you give to an employee in this situation? supposed it happens today in Chicago.

A 70-year-old employee required a triple bypass surgery and her physicians advised her to refrain from in-person work for 12 weeks following the surgery, although she could commence remote work after just two weeks. At the time of the employee's surgery, the company was entirely remote, but they opted to resume in-person work one month later. When the employee was unable to return to in-person work, she was terminated. the company has less than 50 employees.