An employer commits an unlawful employment practice if:
(1) the employer administers a leave policy under which an employee is entitled to personal leave to care for or otherwise assist the employee's sick child; and
(2) the leave policy described by Subdivision (1) does not treat in the same manner as an employee's biological or adopted minor child any foster child of the employee who:
(A) resides in the same household as the employee; and
(B) is under the conservatorship of the Department of Family and Protective Services.