Can a plaintiff bring a common law action for negligence against a company director who is also a nurse?

Heavenly demurred and filed a motion to dismiss, asserting the court did not have subject matter jurisdiction because plaintiff's exclusive remedy was under the Workers' Compensation Act. Plaintiff contended she was entitled to bring a common law action for negligence against Heavenly under the "dual capacity doctrine" established in Duprey v. Shane (1952) 39 Cal.2d 781, 249 P.2d 8. The trial court overruled the demurrer and denied the motion to dismiss.