A.T. Robertson Commentary Mark 7:30

"And she went away unto her house, and found the child laid upon the bed, and the demon gone out." — Mark 7:30 (ASV)

And the demon gone out (κα το δαιμονιον εξεληλυθος). This was her crumb from the children's table. The perfect active participle expresses the state of completion. The demon was gone for good and all.