Who is Mitza Lizalor from Foundation and Earth and what is their importance?

Lizalor is the Minister of Transportation on Comporellon. She wants the Far Star and tries to demand that Travize give it up. She claims that the Foundation wants the ship and offers Travize a different ship. Travize quickly learns that she has no intention of turning the ship over to the Foundation, but plans to keep it for her own people. When he asks for a compromise, she takes him to her apartment and they have sex.