He is excited by her demonstration of faith. Its not by the touch of a magic robe. Its the combination of God's healing grace and the work she does that makes it happen. But we are left unfinished with Jairus and his daughter. Death has had its way.
All hope is gone.
Only someone who has lost a son or daughter could understand that. But Jesus walks right into the place of death. He enters headlong into their hopelessness. Once again, the weaving together of God's power with human faith leads to a restored life. In this story, Jairus and his daughter have nothing left to lose.