Melody slept in a sunny spot on the kitchen floor for a while, then chased after ghosties. Her people couldn’t see them, but they were there. They were mean, nasty buggers too. They said such unpleasant things, and if anything was ever lost or broken, suffice to say, it was the ghosties faults. Well, except for the things that Melody legitimately hid or broke. But the ghosties ran around the house, spreading ill-will and bad luck. So Melody caught them, and killed them, and presented them to her people. They thought she was chasing dust, not keeping the evil away.