“Then he said to her, ‘Because you said this, you may go. The demon has left your daughter.’ She went home and found the child lying on the bed, and the demon gone.”
The same faith that caused the Syrophoenician woman to go to Jesus caused her to leave him when he said her daughter was well. She believed Jesus had healed her child.
What Jesus says, he will do. If he says it, we may and must trust him. When he says he will provide for our needs, we ought to be believe him. When he send us and promises us his empowering presence, we should go.