I'd rather be in this chair knowing him then on my feet without him. And, in that moment Joni knows that she has been found the meaning of her paralyzes. Tragic events happen. God does not cause them to happen. Through Christ, pointless tragic events are given meaning.
Meaning is attributed after the tragedy.
By choosing Christ, our lives become meaningful because of Christ. God's gift to us is meaning where there is there is hopeless. When we are able to see the meaning in our lives our eyes are opened.