People are comparing Lwaxana with Neelix...?
Neelix would butt into everything; Lwaxana knew when to keep to herself (and be serious) and when to joke around.
One of her best scenes is when the audience is first introduced to her in 'Haven.' She beamed up to the ENT facing the wall, and panics asking 'Where is everybody?' She then quickly composes herself when she faces Deanna and others who are welcoming her.